uma: two street vendors possibly stop a massive terror attack, dwayne jackson alerted police to a smoking suv and describing what he saw. listen: i approached the car, i saw the keys inside. it was it running. yes, the car was running and flashing lights were on and i kind of instantly looked around, to see, hey, whose car is this, and no one stepped forward, and, then about that time, the officer came up on the mounted horse and he s asking me, do i know whose car it is and, a couple officers came and one of the officers from midtown south, a regular beat cop and said dwayne did you see the guy get out and unfortunately i didn t see the person get out of it and, you know, the windows were tinted in the back and looking around and he pull out his flashlight and didn t see anything and shortly after that, that is when the first explosion