Leave the area immediately.
Avoid crowds. Crowds of people may be targeted for a second attack.
Avoid unattended cars and trucks. Unattended cars and trucks may contain explosives.
Stay away from damaged buildings to avoid falling glass and bricks. Move at least 10 blocks or 200 yards away from damaged buildings.
Follow directions from people in authority (police, fire, EMS, or military personnel, or from school or workplace supervisors).
Call 9-1-1 once you are in a safe area, but only if police, fire, or EMS has not arrived.
Help others who are hurt or need assistance to leave the area if you are able. If you see someone who is seriously injured, seek help. Do not try to manage the situation alone.