![A police officer creates a cordon at the site of a derailed Amtrak train in Philadelphia, Pennsylvania May 13, 2015. Rescue workers searched through the debris on Wednesday for more victims of A police officer creates a cordon at the site of a derailed Amtrak train in Philadelphia, Pennsylvania May 13, 2015. Rescue workers searched through the debris on Wednesday for more victims of](https://c8.alamy.com/comp/2D0B5PA/a-police-officer-creates-a-cordon-at-the-site-of-a-derailed-amtrak-train-in-philadelphia-pennsylvania-may-13-2015-rescue-workers-searched-through-the-debris-on-wednesday-for-more-victims-of-an-amtrak-passenger-train-wreck-in-philadelphia-that-killed-six-people-and-injured-scores-others-as-investigators-sought-to-determine-the-cause-of-the-derailment-authorities-said-they-did-not-know-what-caused-the-new-york-city-bound-train-carrying-243-people-to-derail-at-about-930-pm-edt-tuesday-0130-gmt-wednesday-the-accident-left-rail-cars-mangled-ripped-open-and-strewn-upside-down-in-the-city-2D0B5PA.jpg)
A police officer creates a cordon at the site of a derailed Amtrak train in Philadelphia, Pennsylvania May 13, 2015. Rescue workers searched through the debris on Wednesday for more victims of
![File:US Navy 050120-N-0962S-140 A Sailor lining the street cordon down Pennsylvania Avenue salutes the American flag as it passes during the Inauguration Day Parade held in Washington, D.C.jpg - Wikimedia Commons File:US Navy 050120-N-0962S-140 A Sailor lining the street cordon down Pennsylvania Avenue salutes the American flag as it passes during the Inauguration Day Parade held in Washington, D.C.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/3/33/US_Navy_050120-N-0962S-140_A_Sailor_lining_the_street_cordon_down_Pennsylvania_Avenue_salutes_the_American_flag_as_it_passes_during_the_Inauguration_Day_Parade_held_in_Washington%2C_D.C.jpg)
File:US Navy 050120-N-0962S-140 A Sailor lining the street cordon down Pennsylvania Avenue salutes the American flag as it passes during the Inauguration Day Parade held in Washington, D.C.jpg - Wikimedia Commons
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Members of the joint military cordon fall into formation along Pennsylvania Avenue during the Inauguration Day parade for George H.W. Bush, 41st president of the United States - NARA & DVIDS Public Domain Archive Public Domain Search
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