Three Idaho Army National Guard pilots died Tuesday evening when their Black Hawk helicopter crashed near Boise during a training flight.Col. Christopher Burt said the helicopter was last contacted at 7:45 p.m. while it was on a routine training flight. The UH-60 Black Hawk’s emergency transmitter locator was activated about 15 minutes later.Search and rescue crews found the wreckage about 12:15 a.m. Wednesday near a