Passengers make their way through a TSA checkpoint at Reagan National Airport at the start of the Independence Day holiday weekend in Washington, U.S., July 1, 2016. While many question the effectiveness of enhanced airport security, even stricter measures, like new identification laws, are on the horizon. The law gave the federal government direct responsibility for all airport screenings, a job that airports had previously outsourced to private security companies. Mike Blake / Reuters Travelers make their way past a TSA security officer and dog at Lindbergh Field airport in San Diego, California, U.S. July 1, 2016. Accounting for the added time to screen for banned items and possible enhanced security now requires travelers to get to the airport hours earlier than they did before Sept. 11.

Source: Huffington Post September 11, 2016 18:33 UTC