Passengers at Reagan National Airport in Washington, D.C., line up at a TSA checkpoint on Oct. 4, 2014. TSA Pre-Check allows approved fliers to go through expedited security screening. (iStockphoto) TSA Pre-Check enrollment breaks 2M Enrollment rates have swelled 50 percent from earlier in 2015, according to TSA partner MorphoTrust USA Jan 14, 2016
