Probationary workers were targeted in late night emails Friday notifying them ... landing and navigational aid maintenance, one air traffic controller told the Associated Press.

Probationary workers were targeted in late-night ... Lockerbie, Scotland. The committee is charged with examining safety issues at airlines and airports. ALSO SEE: Pilots, air traffic controllers ...

Probationary workers were targeted in late night emails Friday notifying them ... landing and navigational aid maintenance, one air traffic controller told the Associated Press.

Probationary workers were targeted in late night emails Friday notifying them ... landing and navigational aid maintenance, one air traffic controller told the Associated Press.

The air traffic controller was not authorized to talk to the media and spoke on condition of anonymity. Spero said messages began arriving after 7 p.m. Friday and continued late into the night.

Probationary workers were targeted in late night emails on Friday notifying ... meaning they had been hired less than a year ago. Zero air traffic controllers and critical safety personnel were ...