The aviation regiment is the basic tactical unit. Due to differences in weaponry and tasks, the number of aircraft in an aviation regiment ranges from 20 to 40.

由于武器装备和担负的任务不同，各类航空兵团编制飞机数量，通常在20架至40架之间不等；

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In New Jersey, authorities raised security statewide, calling in off-duty state police officers and deploying bomb units, aviation crews, tactical teams and search and rescue assets as a precaution.

WSJ: Security beefed up worldwide after Boston blasts