http://news.yahoo.com/s/ap/20070207/ap_on_re_mi_ea/iraq;_ylt=AiTixYBc0Z9hKvK2rdFRsDys0NUE.......Three other helicopters also have gone down since Jan. 20 killing a total of 19 Americans — 14 troops and five civilian security contractors.
The spate of helicopter crashes underscores the dangers facing U.S. troops as they step up their presence in the Baghdad area in preparation for a long-awaited security sweep to quell the spiraling sectarian violence.
More American troops were killed in combat in Iraq over the past four months — at least 334 through Jan. 31 — than in any comparable stretch since the war began, according to an Associated Press analysis of casualty records, as U.S. soldiers and Marines find themselves fighting more battles in the streets of Baghdad, as well as other cities.
The Iraqi government also has faced increased pressure over delays in starting the operation as hundreds of Iraqis have been killed in a spate of bombings and other violence in recent weeks.