diff --git a/Boxes/.gitignore b/Boxes/.gitignore
deleted file mode 100755
index d6b7ef3..0000000
--- a/Boxes/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*
-!.gitignore
diff --git a/build.ps1 b/build.ps1
index b74f906..5dc0966 100644
--- a/build.ps1
+++ b/build.ps1
@@ -19,6 +19,7 @@
    ./build.ps1 -ProviderName vmware_workstation -PackerPath 'C:\packer.exe'
 #>
 
+[cmdletbinding()]
 Param(
   # Vagrant provider to use.
   [ValidateSet('virtualbox', 'vmware_workstation')]
@@ -27,6 +28,33 @@ Param(
 )
 
 
+$DL_DIR = Split-Path -Parent -Path $MyInvocation.MyCommand.Definition
+$LAB_HOSTS = ('logger', 'dc', 'wef', 'win10')
+
+# Set Provider variable for use deployment functions
+if ($ProviderName -eq 'vmware_workstation') {
+  $Provider = 'vmware'
+}
+else {
+  $Provider = 'virtualbox'
+}
+
+
+function install_checker {
+  param(
+    [string]$Name 
+  ) 
+  $results = Get-ItemProperty 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*' | Select-Object DisplayName
+  $results += Get-ItemProperty 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' | Select-Object DisplayName
+
+  forEach ($result in $results) {
+    if ($result -like "*$Name*") {
+      return $true
+    }
+  }
+  return $false
+}
+
 function check_packer_and_vagrant {
   # Check if vagrant is in path
   try {
@@ -42,12 +70,12 @@ function check_packer_and_vagrant {
   [System.Version]$version_comparison = 2.0.0
 
   if ($vagrant_version -lt $version_comparison) {
-    Write-Warning 'WARNING: It is highly recommended to use Vagrant 2.0.0 or above before continuing'
+    Write-Warning 'It is highly recommended to use Vagrant 2.0.0 or above before continuing'
   }
 
   #Check for packer at $PackerPath
   if (!(Get-Item $PackerPath)) {
-    Write-Output "Packer not found at $PackerPath"
+    Write-Error "Packer not found at $PackerPath"
     Write-Output 'Re-run the script setting the PackerPath parameter to the location of packer'
     Write-Output "Example: build.ps1 -PackerPath 'C:\packer.exe'"
     Write-Output 'Exiting..'
@@ -57,24 +85,31 @@ function check_packer_and_vagrant {
 
 # Returns 0 if not installed or 1 if installed
 function check_virtualbox_installed {
-  if (Get-WmiObject Win32_Product -Filter "Name LIKE '%VirtualBox%'") {
+  Write-Verbose '[check_virtualbox_installed] Running..'
+  if (install_checker -Name "VirtualBox") {
+    Write-Verbose '[check_virtualbox_installed] Virtualbox found.'
     return $true
   }
   else {
+    Write-Verbose '[check_virtualbox_installed] Virtualbox not found.'
     return $false
   }
 }
 function check_vmware_workstation_installed {
-  if (Get-WmiObject Win32_Product -Filter "Name = 'VMWare Workstation'") {
+  Write-Verbose '[check_vmware_workstation_installed] Running..'
+  if (install_checker -Name "VMWare Workstation") {
+    Write-Verbose '[check_vmware_workstation_installed] Vmware found.'
     return $true
   }
   else {
+    Write-Verbose '[check_vmware_workstation_installed] Vmware not found.'
     return $false
   }
 } 
 
 #TODO: Verify that the plugin is called 'vagrant-vmware-workstation'
 function check_vmware_vagrant_plugin_installed {
+  Write-Verbose '[check_vmware_vagrant_plugin_installed] Running..'
   if (!(vagrant plugin list | Select-String 'vagrant-vmware-workstation')) {
     Write-Output 'VMWare Workstation is installed, but the Vagrant plugin is not.'
     Write-Output 'Visit https://www.vagrantup.com/vmware/index.html#buy-now for more information on how to purchase and install it'
@@ -82,6 +117,7 @@ function check_vmware_vagrant_plugin_installed {
     return $false
   }
   else {
+    Write-Verbose '[check_vmware_vagrant_plugin_installed] VMware vagrant plugin found.'
     return $true
   }
 }
@@ -95,38 +131,43 @@ function list_providers {
     Write-Output '[*] vmware_workstation'
   }
   if ((-Not (check_virtualbox_installed)) -and (-Not (check_vmware_workstation_installed))) {
-    Write-Output 'You need to install a provider such as VirtualBox or VMware Workstation to continue.'
+    Write-Error 'You need to install a provider such as VirtualBox or VMware Workstation to continue.'
     break
   }
   $ProviderName = Read-Host 'Which provider would you like to use?'
   if ($ProviderName -ne 'virtualbox' -or $ProviderName -ne 'vmware_workstation') {
-    Write-Output "Please choose a valid provider. $ProviderName is not a valid option"
+    Write-Error "Please choose a valid provider. $ProviderName is not a valid option"
     break
   }
   return $ProviderName
 }
 
 function preflight_checks {
-  $DL_DIR = $MyInvocation.MyCommand.Path
-
+  Write-Verbose '[preflight_checks] Running..'
   # Check to see that no boxes exist
+  Write-Verbose '[preflight_checks] Checking for pre-existing boxes..'
   if ((Get-ChildItem "$DL_DIR\Boxes\*.box").Count -gt 0) {
-    Write-Output 'You appear to have already built at least one box using Packer. This script does not support pre-built boxes. Please either delete the existing boxes or follow the build steps in the README to continue.'
+    Write-Error 'You appear to have already built at least one box using Packer. This script does not support pre-built boxes. Please either delete the existing boxes or follow the build steps in the README to continue.'
     break
   }
 
   # Check to see that no vagrant instances exist
+  Write-Verbose '[preflight_checks] Checking for vagrant instances..'
+  $CurrentDir = Get-Location
+  Set-Location "$DL_DIR\Vagrant"
   if (($(vagrant status) | Select-String 'not created').Count -ne 4) {
-    Write-Output 'You appear to have already created at least one Vagrant instance. This script does not support already created instances. Please either destroy the existing instances or follow the build steps in the README to continue.'
+    Write-Error 'You appear to have already created at least one Vagrant instance. This script does not support already created instances. Please either destroy the existing instances or follow the build steps in the README to continue.'
     break
   }
+  Set-Location $CurrentDir
 
   # Check available disk space. Recommend 80GB free, warn if less
-  $Drives = Get-PSDrive | Where-Object {$_.Provider -like '*FileSystem*'}
-  $DrivesList = @()
+  Write-Verbose '[preflight_checks] Checking disk space..'
+  $drives = Get-PSDrive | Where-Object {$_.Provider -like '*FileSystem*'}
+  $drivesList = @()
   
   forEach ($drive in $drives) {
-    if ($drive.free -lt 80000000) {
+    if ($drive.free -lt 80GB) {
       $DrivesList = $DrivesList + $drive
     }
   }
@@ -140,29 +181,170 @@ function preflight_checks {
   }
 
   # Check Packer Version against known bad
+  Write-Verbose '[preflight_checks] Checking for bad packer version..'
   [System.Version]$PackerVersion = $(& $PackerPath "--version")
   [System.Version]$PackerKnownBad = 1.1.2
 
   if ($PackerVersion -eq $PackerKnownBad) {
-    Write-Output 'Packer 1.1.2 is not supported. Please upgrade to a newer version and see https://github.com/hashicorp/packer/issues/5622 for more information.'
+    Write-Error 'Packer 1.1.2 is not supported. Please upgrade to a newer version and see https://github.com/hashicorp/packer/issues/5622 for more information.'
     break
   }
   
   # Ensure the vagrant-reload plugin is installed
-  if (-Not (if (!(vagrant plugin list | Select-String 'vagrant-reload')))) {
+  Write-Verbose '[preflight_checks] Checking if vagrant-reload is installed..'
+  if (-Not (vagrant plugin list | Select-String 'vagrant-reload')) {
     Write-Output 'The vagrant-reload plugin is required and not currently installed. This script will attempt to install it now.'
     (vagrant plugin install 'vagrant-reload')
     if ($LASTEXITCODE -ne 0) {
-      Write-Output 'Unable to install the vagrant-reload plugin. Please try to do so manually and re-run this script.'
+      Write-Error 'Unable to install the vagrant-reload plugin. Please try to do so manually and re-run this script.'
       break
     }
   }
+  Write-Verbose '[preflight_checks] Finished.'
 }
 
+function packer_build_box {
+  param(
+    [string]$Box
+  )
+
+  Write-Verbose "[packer_build_box] Running for $Box"
+  $CurrentDir = Get-Location
+  Set-Location "$DL_DIR\Packer" 
+  Write-Output "Using Packer to build the $BOX Box. This can take 90-180 minutes depending on bandwidth and hardware."
+  &$PackerPath @('build', "--only=$Provider-iso", "$box.json")
+  Write-Verbose "[packer_build_box] Finished for $Box. Got exit code: $LASTEXITCODE"
+
+  if ($LASTEXITCODE -ne 0) {
+    Write-Error "Something went wrong while attempting to build the $BOX box."
+    Write-Output "To file an issue, please visit https://github.com/clong/DetectionLab/issues/"
+    break
+  }
+  Set-Location $CurrentDir
+}
+
+function move_boxes {
+  Write-Verbose "[move_boxes] Running.."
+  Move-Item -Path $DL_DIR\Packer\*.box -Destination $DL_DIR\Boxes
+  if (-Not (Test-Path "$DL_DIR\Boxes\windows_10_$Provider.box")) {
+    Write-Error "Windows 10 box is missing from the Boxes directory. Qutting."
+    break
+  }
+  if (-Not (Test-Path "$DL_DIR\Boxes\windows_2016_$Provider.box")) {
+    Write-Error "Windows 2016 box is missing from the Boxes directory. Qutting."
+    break
+  }
+  Write-Verbose "[move_boxes] Finished."
+}
+
+function vagrant_up_host {
+  param(
+    [string]$VagrantHost
+  )
+  Write-Verbose "[vagrant_up_host] Running for $VagrantHost"
+  Write-Host "Attempting to bring up the $VagrantHost host using Vagrant"
+  $CurrentDir = Get-Location
+  Set-Location "$DL_DIR\Vagrant"
+  &vagrant.exe @('up', $VagrantHost, '--provider', "$Provider")
+  Set-Location $CurrentDir
+  Write-Verbose "[vagrant_up_host] Finished for $VagrantHost. Got exit code: $LASTEXITCODE"
+  return $LASTEXITCODE
+}
+
+function vagrant_reload_host {
+  param(
+    [string]$VagrantHost
+  )
+  Write-Verbose "[vagrant_reload_host] Running for $VagrantHost"
+  $CurrentDir = Get-Location
+  Set-Location "$DL_DIR\Vagrant"
+  &vagrant.exe @('reload', $VagrantHost, '--provision') | Out-Null
+  Set-Location $CurrentDir
+  Write-Verbose "[vagrant_reload_host] Finished for $VagrantHost. Got exit code: $LASTEXITCODE"
+  return $LASTEXITCODE
+}
+
+function download {
+  param(
+    [string]$URL,
+    [string]$PatternToMatch
+  )
+  Write-Verbose "[download] Running for $URL, looking for $PatternToMatch"
+  [Net.ServicePointManager]::SecurityProtocol = "tls12, tls11, tls"
+  
+  $wc = New-Object System.Net.WebClient
+  $result = $wc.DownloadString($URL)
+  if ($result -like "*$PatternToMatch*") {
+    Write-Verbose "[download] Found $PatternToMatch at $URL"
+    return $true
+  }
+  else {
+    Write-Verbose "[download] Could not find $PatternToMatch at $URL"
+    return $false
+  }
+}
+
+function post_build_checks {
+ 
+  Write-Verbose '[post_build_checks] Running Caldera Check.'
+  $CALDERA_CHECK = download -URL 'https://192.168.38.5:8888' -PatternToMatch '<title>CALDERA</title>'
+  Write-Verbose "[post_build_checks] Cladera Result: $CALDERA_CHECK"
+ 
+  Write-Verbose '[post_build_checks] Running Splunk Check.'
+  $SPLUNK_CHECK = download -URL 'https://192.168.38.5:8000/en-US/account/login?return_to=%2Fen-US%2F' -PatternToMatch 'This browser is not supported by Splunk'
+  Write-Verbose "[post_build_checks] Splunk Result: $SPLUNK_CHECK"
+ 
+  Write-Verbose '[post_build_checks] Running Fleet Check.'
+  $FLEET_CHECK = download -URL 'https://192.168.38.5:8412' -PatternToMatch 'Kolide Fleet'
+  Write-Verbose "[post_build_checks] Fleet Result: $FLEET_CHECK"
+ 
+  if ($CALDERA_CHECK -eq $false) {
+    Write-Warning 'Caldera failed post-build tests and may not be functioning correctly.'
+  }
+  if ($SPLUNK_CHECK -eq $false) {
+    Write-Warning 'Splunk failed post-build tests and may not be functioning correctly.'
+  }
+  if ($FLEET_CHECK -eq $false) {
+    Write-Warning 'Fleet failed post-build tests and may not be functioning correctly.'
+  }
+}
 
-$DL_DIR = $MyInvocation.MyCommand.Path
-$LAB_HOSTS = ('logger', 'dc', 'wef', 'win10')
 # If no ProviderName was provided, get a provider
 if ($ProviderName -eq $Null) {
   $ProviderName = list_providers
-}
\ No newline at end of file
+}
+
+# Run check functions
+preflight_checks
+
+# Build Packer Boxes
+packer_build_box -Box 'windows_2016'
+packer_build_box -Box 'windows_10'
+
+# Move Packer Boxes
+move_boxes
+
+# Vagrant up each box and attempt to reload one time if it fails
+forEach ($VAGRANT_HOST in $LAB_HOSTS) {
+  Write-Verbose "[main] Running vagrant_up_host for: $VAGRANT_HOST"
+  $result = vagrant_up_host -VagrantHost $VAGRANT_HOST
+  if ($result -eq 0) {
+    Write-Output "Good news! $VAGRANT_HOST was built successfully!"
+  }
+  else {
+    Write-Warning "Something went wrong while attempting to build the $VAGRANT_HOST box."
+    Write-Output "Attempting to reload and reprovision the host..."
+    Write-Verbose "[main] Running vagrant_reload_host for: $VAGRANT_HOST"
+    $retryResult = vagrant_reload_host -VagrantHost $VAGRANT_HOST
+    if ($retryResult -ne 0) {
+      Write-Error "Failed to bring up $VAGRANT_HOST after a reload. Exiting"
+      break
+    }
+  }  
+  Write-Verbose "[main] Finished for: $VAGRANT_HOST"
+}
+
+
+Write-Verbose "[main] Running post_build_checks"
+post_build_checks
+Write-Verbose "[main] Finished post_build_checks"
\ No newline at end of file