On this day: April 22

Published On: Apr 19 2013 01:48:16 PM CDT   Updated On: Apr 22 2014 01:00:00 AM CDT

Thousands rush to claim land in Oklahoma, the first nationwide Earth Day takes place, Richard Nixon dies, federal agents seize Elián González, and the Deepwater Horizon drilling rig sinks while spewing oil, all on this day.

OTD April 22 - Pat Tillman
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Department of Defense

2004: Pat Tillman, the NFL player who left professional football and enlisted in the U.S. Army in June 2002 in the aftermath of the Sept. 11, 2001, terrorist attacks, dies at age 27 in a friendly fire incident during a firefight with hostile forces in Sperah, Afghanistan. The Army at first reported that Tillman had been killed by enemy fire, and then Lt. Gen. Stanley A. McChrystal approved the award of a Silver Star.

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