In this Thursday, April 12, 2012 file photo, a red flag is whipped by wind on a tripod sitting on the frozen Nenana River on, in Nenana, Alaska. The tripod serves as the basis for Alaska's biggest guessing game, with people buying tickets to guess when the ice will give out and the tripod will fall into the river. That happened at 7:39 p.m. Monday night, April 23, 2012. Ice Classic officials will contact the winners when all of the tickets have been entered. She says that could take another week