TommyCooper2012

Hi All, I've created a map primarily to get mid air refuelling practice and have found that my friend shows as connected but then immediately drops from the game so we are unable to continue? I only have two F-15's and a tanker so I'm really confused as to what the problem is? Please can someone suggest what I can do?... We are both running 1.2.2.75.70 Thanks!!