Fourteen americans died on Monday when two helicopters crashed in two different crashes in different parts of Afghanistan.
In the the west, seven soldiers and three agents of The Drug Enforcement Administration, and in the south a helicopter collision resulted in the death of four american soldiers.
A spokeswoman for the American military, Capt. Elizabeth Mathias, would not specify an exact location for the crash in the west, although she said the craft was a large Chinook helicopter and the military was "98 percent sure that insurgent activity was not involved.", states the New York Times.
It was the heaviest single-day loss of life since June 28, 2005, when 16 U.S. troops on a special forces helicopter died when their MH-47 Chinook helicopter was shot down by insurgents. The casualties also mark the first DEA deaths in Afghanistan since it began operations there in 2005, according to the Star Tribune.
Both crashes are being further investigated.