Authorities probe how airline employee could steal plane

The site on Ketron Island in Washington state where an Horizon Air turboprop plane crashed after it was stolen from Sea-Tac International Airport Saturday near Steilacoom, Wash. (AP Photo/Ted S. Warren)

OLYMPIA, Wash. — Investigators are piecing together how an airline ground agent stole an empty commercial airplane, took off from Sea-Tac International Airport and crashed into a small island in the Puget Sound after being chased by military jets that were quickly scrambled to intercept the aircraft.