How run a command on an EC2 instance? AWS-RunShellScript is missing from SSM

In the AWS Console, I opened the AWS Systems Manager Console. I then chose "Run Command" and clicked the "Run a command" button.

The only commands it has are:

AWS-ApplyAnsiblePlaybooks   Amazon  LinuxAWS-ApplyChefRecipes    Amazon  Windows, LinuxAWS-ApplyDSCMofs    Amazon  WindowsAWS-ApplyPatchBaseline  Amazon  WindowsAWS-ConfigureAWSPackage Amazon  Windows, LinuxAWS-ConfigureCloudWatch Amazon  WindowsAWS-ConfigureDocker Amazon  Windows, LinuxAWS-ConfigureWindowsUpdate  Amazon  WindowsAWS-FindWindowsUpdates  Amazon  WindowsAWS-InstallApplication  Amazon  Windows

Where did the AWS-RunShellScript command go? Is there another way i can test running a command on an EC2 instance that I have not opened up for inbound internet traffic?