The National Transportation Safety Board is investigating the Air Canada crash that killed two pilots at LaGuardia on Sunday, but other air travel issues are causing delays. Jennifer Homendy, chair of the NTSB, said on Monday that one investigator brought in to investigate the deadly crash was stuck in the TSA line at an airport in Houston for hours. "Our air traffic control specialist was in line with TSA for three hours until we called in Houston to beg to see if we can get her through so we