diff --git a/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/Program.cs b/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/Program.cs
index f38a862..c040e1d 100644
--- a/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/Program.cs
+++ b/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/Program.cs
@@ -1,4 +1,4 @@
-
+using System;
 
 namespace CodeLou.CSharp.Week2.Challenge
 {
@@ -16,7 +16,7 @@ static void Main(string[] args)
             // Hint: In Visual Studio, you can build the project by selecting "Build Solution" from the
             //       build menu, or by pressing <Ctrl>+<Shift>+B.
             Console.WriteLine("Welcome to the Code Louisville C# week 2 code challenge!");
-            Console.WriteLine("Press <Enter> to begin...")
+            Console.WriteLine("Press <Enter> to begin...");
             Console.ReadLine();
 
             Console.WriteLine("This is the launch application for the first human mission to Mars.");
@@ -26,7 +26,7 @@ static void Main(string[] args)
             // Capture the number of seconds that the user would like to count down before liftoff.
             // Hint: You should use another method of the Console class and store the output into a
             //       variable to use later.
-
+            var numSeconds = Console.ReadLine();
 
             // Task 4:
             // Write a condition to test whether the number that they entered is less than or equal to zero.
@@ -34,7 +34,18 @@ static void Main(string[] args)
             // If the result is true, write "Please enter a positive number." to the console.
             // Hint: The input that you captured is currently a string type. You will have to "parse" it
             //       as a different type in order to pass it to the IsLessThanOrEqualToZero function.
+            int iNumSeconds;
+            if (!int.TryParse(numSeconds, out iNumSeconds))
+            {
+                Console.WriteLine("Please enter a whole number.");
+                return;
+            }
+           
 
+            if (IsLessThanOrEqualToZero(iNumSeconds))
+            {
+                Console.WriteLine("Please enter a positive number.");
+            }
 
             // Task 5:
             // Add an "else" block to the condition from Task 4. This should be run in the case that the
@@ -44,6 +55,16 @@ static void Main(string[] args)
             //       "for". You can choose whichever you'd like to solve the task. The Microsoft
             //       Developer Network (MSDN) website contains all of the documentation for C#. If you want
             //       to learn more about loops, visit https://msdn.microsoft.com/en-us/library/32dbftby.aspx.
+            else
+            {
+                for(var i = iNumSeconds; i >= 0; i--)
+                {
+                    Console.WriteLine(i);
+                    System.Threading.Thread.Sleep(500);
+                }
+                Console.WriteLine("LIFTOFF!");
+            }
+            
 
             Console.WriteLine("Press <Enter> to exit...");
             Console.ReadLine();
diff --git a/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/CodeLou.CSharp.Week2.Challenge.csproj.FileListAbsolute.txt b/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/CodeLou.CSharp.Week2.Challenge.csproj.FileListAbsolute.txt
index 0302706..f80793e 100644
--- a/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/CodeLou.CSharp.Week2.Challenge.csproj.FileListAbsolute.txt
+++ b/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/CodeLou.CSharp.Week2.Challenge.csproj.FileListAbsolute.txt
@@ -1,2 +1,8 @@
 C:\Users\jfraney1\Source\Repos\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\bin\Debug\CodeLou.CSharp.Week2.Challenge.exe.config
 C:\Users\Brian\CodeChallenges\Challenges\CS Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\bin\Debug\CodeLou.CSharp.Week2.Challenge.exe.config
+C:\Users\English\Source\Repos\C-Sharp-Weekly-Challenge\Challenges\Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\bin\Debug\CodeLou.CSharp.Week2.Challenge.exe.config
+C:\Users\English\Source\Repos\C-Sharp-Weekly-Challenge\Challenges\Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\obj\Debug\CodeLou.CSharp.Week2.Challenge.csprojResolveAssemblyReference.cache
+C:\Users\English\Source\Repos\C-Sharp-Weekly-Challenge\Challenges\Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\bin\Debug\CodeLou.CSharp.Week2.Challenge.exe
+C:\Users\English\Source\Repos\C-Sharp-Weekly-Challenge\Challenges\Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\bin\Debug\CodeLou.CSharp.Week2.Challenge.pdb
+C:\Users\English\Source\Repos\C-Sharp-Weekly-Challenge\Challenges\Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\obj\Debug\CodeLou.CSharp.Week2.Challenge.exe
+C:\Users\English\Source\Repos\C-Sharp-Weekly-Challenge\Challenges\Week2\CodeLou.CSharp.Week2.Challenge\CodeLou.CSharp.Week2.Challenge\obj\Debug\CodeLou.CSharp.Week2.Challenge.pdb
diff --git a/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
index 4f40cf8..e2a131c 100644
Binary files a/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache and b/Challenges/Week2/CodeLou.CSharp.Week2.Challenge/CodeLou.CSharp.Week2.Challenge/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache differ