A flag, a yellow ribbon for a fallen Green Beret Sgt. 1st Class Peter P. Tycz II was killed in crash of U.S. military plane in Afghanistan.Terry Harnden, center, is comforted by loved ones after learning that her son, Sgt. 1st Class Peter P. Tycz II, had been killed while on duty. Their phone was ringing off the hook Thursday. Cars choked the street in the City of Tonawanda neighborhood and a crowd of family and high school buddies spilled from the house into the yard, where a small American flag is staked near a tree ringed with yellow ribbon....