diff --git a/Terraform/main.tf b/Terraform/main.tf
index 4c0becb..40868f3 100644
--- a/Terraform/main.tf
+++ b/Terraform/main.tf
@@ -26,7 +26,7 @@ resource "aws_route" "internet_access" {
 resource "aws_subnet" "default" {
   vpc_id                  = "${aws_vpc.default.id}"
   cidr_block              = "192.168.38.0/24"
-  availability_zone = "${var.availability_zone}"
+  availability_zone       = "${var.availability_zone}"
   map_public_ip_on_launch = true
 }
 
@@ -190,7 +190,7 @@ resource "aws_instance" "logger" {
 
 resource "aws_instance" "dc" {
   instance_type = "t2.medium"
-  ami = "${data.aws_ami.dc_ami.image_id}"
+  ami = "${var.dc_ami}"
   tags {
     Name = "dc.windomain.local"
   }
@@ -204,7 +204,7 @@ resource "aws_instance" "dc" {
 
 resource "aws_instance" "wef" {
   instance_type = "t2.medium"
-  ami = "${data.aws_ami.wef_ami.image_id}"
+  ami = "${var.wef_ami}"
   tags {
     Name = "wef.windomain.local"
   }
@@ -218,7 +218,7 @@ resource "aws_instance" "wef" {
 
 resource "aws_instance" "win10" {
   instance_type = "t2.medium"
-  ami = "${data.aws_ami.win10_ami.image_id}"
+  ami = "${var.win10_ami}"
   tags {
     Name = "win10.windomain.local"
   }
diff --git a/Terraform/variables.tf b/Terraform/variables.tf
index 3139d42..246639b 100644
--- a/Terraform/variables.tf
+++ b/Terraform/variables.tf
@@ -35,60 +35,22 @@ variable "external_dns_servers" {
   default = ["8.8.8.8"]
 }
 
-# The logger host will provision itself and does not use a pre-built AMI
-
-# Use Data Sources to resolve the AMI-ID for the pre-built DC host
-data "aws_ami" "dc_ami" {
-  owners = ["505638924199"]
-  filter {
-    name = "tag:Name"
-    values = ["dc"]
-  }
-  filter {
-    name = "image-id"
-    values = ["${var.dc_ami}"]
-  }
-}
-
-# Use Data Sources to resolve the AMI-ID for the pre-built WEF host
-data "aws_ami" "wef_ami" {
-  owners = ["505638924199"]
-  most_recent = true
-  filter {
-    name = "tag:Name"
-    values = ["wef"]
-  }
-  filter {
-    name = "image-id"
-    values = ["${var.wef_ami}"]
-  }
-}
-
-# Use Data Sources to resolve the AMI-ID for the pre-built Win10 host
-data "aws_ami" "win10_ami" {
-  owners = ["505638924199"]
-  most_recent = true
-  filter {
-    name = "tag:Name"
-    values = ["win10"]
-  }
-  filter {
-    name = "image-id"
-    values = ["${var.win10_ami}"]
-  }
-}
-
+# The logger host uses the Amazon Ubuntu 16.04 image
 # If you are building your own AMIs, replace the default values below with
 # the AMI IDs
 variable "logger_ami" {
-  default = "*"
+  type = "string"
+  default = "ami-0693b32d066fade8a"
 }
 variable "dc_ami" {
-  default = "*"
+  type = "string"
+  default = "ami-0fcdb93aba16008ad"
 }
 variable "wef_ami" {
-  default = "*"
+  type = "string"
+  default = "ami-0bb08349b4ddd2816"
 }
 variable "win10_ami" {
-  default = "*"
+  type = "string"
+  default = "ami-00ae1022c8a735d81"
 }