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 .

A constant Allied Causation artillery barrage was maintained Statement on the exits .

Dyer blocked Hindering the main exits , and the troops continue to fire Use_firearm into the fleeing Escaping civilians until their ammunition was almost exhausted Expend_resource .

The Athenians , joined Cause_to_amalgamate by a small force from Plataea , marched to Marathon , and succeeded in blocking Hindering the two exits from the plain of Marathon .

since the accident Catastrophe , it has become Becoming mandatory for aircraft manufacturers Manufacturing to prove Convincing their aircraft could be evacuated Escaping within 90 seconds of the commencement of an evacuation Escaping , and passengers seated in overwing exits are now instructed Request to assist Assistance in an emergency situation .

An aviation analyst Scrutiny said Statement the accident Catastrophe was `` a defining moment in the history of civil aviation '' because it brought about industry-wide changes Change to the seating layout near emergency exits , fire-resistant seat covers Hiding_objects , floor lighting , fire-resistant wall and ceiling panels , more fire extinguishers and clearer evacuation rules .

The Israeli Army surrounded Surrounding Sabra and Shatila and stationed Motion troops at the exits of the area to prevent Preventing_or_letting camp residents from leaving Departing and , at the Phalangists ' request Request , fired Use_firearm illuminating flares at night .