Two Pennsylvania State Police troopers were injured in the crash at Carlisle Airport, officials said.

Ecuador’s director of national intelligence was also among those who died in the crash. The search and recovery efforts were being hampered by a fire at the site and the difficult terrain, officials said.

© Kenya Red Cross, via Associated Press

An air traffic controller noticed that two planes — one departing, one landing — were both flight 2482. He acted quickly to avoid confusion.

© Maansi Srivastava for The New York Times

The National Transportation Safety Board said it had found a bird’s remains and feathers on a broken engine.

© Alexandros Avramidis/Reuters

The Apache helicopter crashed in Salado, a small town about 20 miles from the military base, and set off a fire, the authorities said.