This is a big bug in H2H play. Let me explain. Lets say I'm in a HTH game and I takeoff on a jabo mission. I kill 4 of the acks on a field before getting killed. Then you join the game, and decide that you'd like to help me jabo the field. You get to the field and all the acks are up. "Mark musta been full of beans, he didn't get any acks" you think as you dive in on the blazing field. You get a few acks, but as you're diving on one, you strafe the hell out of it and nothing happens. You get killed and sent back to the tower. The one that didn't go down was one of the four that I killed previous to you joining. Since you weren't there to "witness" it's killing, it's up for you. And since it's really already dead, it can't be killed. This also goes for all the other targets. I find it very frustrating because there's no way to know if the ack has been killed previous before trying to strafe it. This is made worse by hosts who set the rebuild time multiplyer over 7-8, so that the acks never really rebuild for you to kill, because as soon as the acks rebuild on my FE (since I killed it) and you joined late it's up for you, so as soon as it repairs it is killable by you. I can really understand how H2H is low on HTC's priority list but I'd like to see this one fixed someday.