Crew Members CDR.....Scobee PLT.....Smith MS1.....Onizuka MS2.....Resnik The references to "NASA" indicate explanatory references NASA provided to the Presidential Commission. Time Crew Crew (Min:Sec) Member Comment T-2:05 MS2 Would you give that back to me? T-2:03 MS2 Security blanket. T-2:02 MS2 Hmm. T-1:58 CDR Two minutes downstairs; you gotta watch running down there? (NASA: Two minutes until launch.) T-1:47 PLT OK there goes the lox arm. (NASA: Liquid oxygen supply arm to ET.) T-1:46 CDR Goes the beanie cap. (NASA: Liquid oxygen vent cap.) T-1:44 MS1 Doesn't it go the other way? T-1:42 Laughter. T-1:39 MS1 Now I see it; I see it. T-1:39 PLT God I hope not Ellison. T-1:38 MS1 I couldn't see it moving; it was behind the center screen. (NASA: Obstructed view of liquid oxygen supply arm.) T-1:33 MS2 Got your harnesses locked? (NASA: Seat restraints.) T-1:29 PLT What for? T-1:28 CDR I won't lock mine; I might have to reach something. T-1:24 PLT Ooh kaaaay. T-1:04 MS1 Dick's thinking of somebody there. T-1:03 CDR Unhuh. T-59 CDR One minute downstairs. (NASA: One minute until launch.) T-52 MS2 Cabin Pressure is probably going to give us an alarm. (NASA: Caution and warning alarm. Routine occurrence during prelaunch.) T-50 CDR OK. T-47 CDR OK there. T-43 PLT Alarm looks good. (NASA: Cabin pressure is acceptable.) T-42 CDR OK. T-40 PLT Ullage pressures are up. (NASA: External tank ullage pressure.) T-34 PLT Right engine helium tank is just a little bit low. (NASA: SSME supply helium pressure.) T-32 CDR It was yesterday, too. T-31 PLT OK. T-30 CDR Thirty seconds down there. (NASA: 30 seconds until launch.) T-25 PLT Remember the red button when you make a roll call. (NASA: Precautionary reminder for communications configuration.) T-23 CDR I won't do that; thanks a lot. T-15 CDR Fifteen. (NASA: 15 seconds until launch.) T-6 CDR There they go guys. (NASA: SSME Ignition.) MS2 All right. CDR Three at a hundred. (NASA: SSME thrust level at 100% for all 3 engines.) T+O MS2 Aaall riiight. T+1 PLT Here we go. (NASA: Vehicle motion.) T+7 CDR Houston, Challenger roll program. (NASA: Initiation of vehicle roll program.) T+11 PLT Go you Mother. T+14 MS1 LVLH. (NASA: Reminder for cockpit switch configuration change. Local vertical/local horizontal.) T+15 MS2 (Expletive) hot. T+16 CDR Ooohh-kaaay. T+19 PLT Looks like we've got a lotta wind here today. T+20 CDR Yeah. T+22 CDR It's a little hard to see out my window here. T+28 PLT There's ten thousand feet and Mach point five. (NASA: Altitude and velocity report.) T+30 Garble. T+35 CDR Point nine. (NASA: Velocity report, 0.9 Mach.) T+40 PLT There's Mach one. (NASA: Velocity report, 1.0 Mach.) T+41 CDR Going through nineteen thousand. (NASA: Altitude report, 19,000 ft.) T+43 CDR OK we're throttling down. (NASA: Normal SSME thrust reduction during maximum dynamic pressure region.) T+57 CDR Throttling up. (NASA: Throttle up to 104% after maximum dynamic pressure.) T+58 PLT Throttle up. T+59 CDR Roger. T+60 PLT Feel that mother go. T+60 Woooohoooo. T+1:02 PLT Thirty-five thousand going through one point five. (NASA: Altitude and velocity report, 35,000 ft., 1.5 Mach.) T+1:05 CDR Reading four eighty six on mine. (NASA: Routine airspeed indicator check.) T+1:07 PLT Yep, that's what I've got, too. T+1:10 CDR Roger, go at throttle up. (NASA: SSME at 104 percent.) T+1:13 PLT Uhoh. T+1:13 LOSS OF ALL DATA.