These I think are bugs...
1) over half the voiceovers don't play... i would be flying around and suddenly notice i had missed a call to do something... as i would just catch the end of the text (yes i was on the right channel)
2) -2 calls bingo, and will not be sent to tanker, and ultimately runs out of fuel and ejects
3) the tanker does not respond to any call on channel 4
4) E2D does not respond to picture requests on channel 3?
Game play
Because for the majority of calls we don't seem to get any BRA or bullseye information "just geography", it's often quite difficult to orientate yourself towards an intercept ... and with no picture or bullseye calls from the e2D that makes for quite a difficult mission