The head of the union that represents most Metro workers has identified the two men who were struck and killed this morning by a piece of heavy track equipment. ATU Local 689 president Jackie Jeter said their names were Jeffrey Garrard and Sung Oh, and that both men were longtime employees of Metro.

“As I have done several times over the past year, I strongly urge the Authority to take the appropriate actions to ensure the safety of workers and riders on the Metrorail,” Jeter said in a statement.

A Metro spokesperson said more information on the two men would be available shortly, so check back for updates.

UPDATE 11:22 a.m. From WMATA:

Garrard, 49, of Clarksburg, MD, a Metro employee since April 1990, and Oh, 68, of Montgomery County, MD, a Metro employee since December 1998, were installing new train control equipment in the track bed along an outbound section of track on the Red Line in the direction of Shady Grove when they were struck at about 1:45 a.m. near the Rockville Metrorail station. The Metro employees were struck by a high rail truck, a large truck that is equipped with special wheels that allow it to drive on the track when electricity that usually powers trains is taken down.