Passage: Their cars full, the gunmen left after about half an hour, firing a fusillade of shots into the air as they drove away from the site, sending cars reversing across Baghdad's bridges to get out of their way. Pedestrians could also be seen running away along the banks of the Tigris and scurrying for safety across the bridges.
What event has already finished? What event has begun but has not finished? What will happen in the future? What happened after the gunmen left? What happened before the gunmen left? What happened before the pedestrians were running away? What happened while the pedestrians were running away? What started after the gunmen fired shots into the air? What happened while the gunmen fired shots into the air? What happened before the gunmen fired shots into the air?