GodofGTA

I just grabbed a quick car, and went over the ramp (it's only there for this mission, I believe). Then I shot through to the end of the parking lot, grabbed my sniper and wasted all of the goons on the lot. Some of them are closer, then I'd take the AK. Afterwards, jump in the van, and you're home-free.

Big Smoke's first name is bloody traitor! Just kidding, Melvin.