Oh yeah, that smoke on Isla was me. I was trying to smoke out the snipers on the hill too. Sorry I screwed up your counter sniping!
A sniper on the road with a GOL was taking pot shots at Bravo after Alpha went, especially when the crate was being disarmed. I had hoped the smoke would act as a deterrent. Despite the smoke he managed to kill me as I disarmed and AFAIR the base blew. Grrr.