backward. april 22nd, 2006, westchester county, new york. trooper todd boemer is busy patrolling interstate 684. >> i was conducting radar enforcement when i saw a large limo, white limo coming northbound at a high rate of speed. the vehicle was going 124 miles per hour. >> the officer gives chase as the driver tears down the interstate. officer boemer is left to wonder why. >> in my mind, what does he have in the vehicle? who's in the vehicle? a dead body, a gun, drugs, whatever? >> in a neighboring township trooper sean kelly hears the call for assistance. >> i was in a position where i could assist him. i was north of his location, and there was a good chance i'd be able to intercept the vehicle. >> trooper kelly enters the interstate and spots the runaway limo.