Jeans is right... but I have only come across a handful of pilots/gunners that can TV without giving at least one little warning beep on my radar.
So, come at me any way you can. But, I wouldn't suggest coming head on, or even from behind. If you come head on, I'll pop my shield, zoom, and shoot. If you come from behind, I'll stop and go straight backwards... then your ass end is right in front of me.
Your best bet is to do what Balls does.. sneak up with a pilum in the vents, or EMP with an APC. But I've got a few tricks up my sleeve for that as well.
Good luck to all of you.