After crashing Attack into the checkpoint , the attacker jumped Self_motion out of the vehicle and began Process_start stabbing Attack people .

Because the doors to the stairwells and exits were locked ( a then-common practice Practice to prevent workers from taking Creating unauthorized breaks and to reduce Cause_change_of_position_on_a_scale theft ) , many of the workers who could not escape Escaping from the burning building jumped Self_motion from the high windows .

Almost all those who jumped Self_motion or fell Motion_directional into the water either drowned Death or died Death within minutes due to the effects of cold shock and incapacitation .

the 2014 white house intrusion occurred Presence on september 19 , 2014 , when omar j. gonzalez , an iraq war veteran with post-traumatic stress disorder , jumped Motion over the white house 's fence and entered Arriving the building 's front door before being stopped Preventing_or_letting first by an off-duty security officer , and later multiple security officers , and arrested Arrest .

Meanwhile , witnesses said Statement the last carriage of the train jumped Motion_directional the tracks and crashed Damaging into another train parked Placing nearby .

After complaints of boredom and depression , on March 13 , 1998 , Gale jumped Body_movement to his death from a classroom on the 15th floor of a building on the MIT campus .