Formation trainer with custom voice over. You'll get a score to see how well you have done.
For faster jets, check out
https://www.digitalcombatsimulator.com/en/files/3327920/
Installation:
-Copy file to C:\Users\%username%\Saved Games\DCS\Missions
Keep within 470ft separation of lead while doing this ~14 minute route
Within 470ft separation is considered acceptable
Between 50 - 170ft separation is considered perfect