The Federal Aviation Administration has taken steps to fire the two workers at LaGuardia Airport, according to two people familiar with the investigation. The collision involving an Air Canada airplane and a fire truck in March left two pilots dead Key points and original sources are listed below.

• The Federal Aviation Administration has taken steps to fire the two workers at LaGuardia Airport, according to two people familiar with the investigation.S1

• The collision involving an Air Canada airplane and a fire truck in March left two pilots deadS2