A Czech member of the U.S.-led multinational peacekeeping force in Sinai was one of the seven peacekeepers killed in a helicopter crash over Tiran Island in Sinai on Thursday. The Czech Republic is mourning its first woman killed in a foreign mission. The UH-60 Black Hawk helicopter of the U.S.-led Multinational Force and Observers was on a routine monitoring mission over Tiran Island when it crashed. Five Americans, a French national and one Czech – 27-year-old Sergeant Michaela Tichá – died in the accident. Magdalena Dvořáková, spokeswoman for the Chief of Staff of the Czech Armed Forces confirmed the news late on Thursday.