Soldiers returning from the Pacific wave from the deck of the USS General Mitchell on Dec. 11, 1945. Much of the health care demand in the VA system is from veterans of earlier wars. AP hide caption

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Tom Tarantino, chief policy officer at Iraq and Afghanistan Veterans of America, speaks at a news conference on Capitol Hill Thursday about holding the Department of Veterans Affairs accountable. Mark Wilson/Getty Images hide caption

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A cross-section of skeletal muscle in this light micrograph shows the individual, parallel muscle fibers (red). These fibers work in concert to power movement. Thomas Deerinck, NCMIR/ScienceSource hide caption

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Remembrance poppies honoring veterans cover a shrine in Wellington, New Zealand, on a recent April 25, when Australia and New Zealand mark ANZAC Day. A new campaign urges people to buy a minute of silence to support veterans. Hagen Hopkins/Getty Images hide caption

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A crowd gathers at the World War II Memorial to call for reopening national memorials closed by the government shutdown. The rally drew support from military veterans, Tea Party activists and Republicans. Andrew Burton/Getty Images hide caption

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After a photo of Lanny Martinson's dog tag was placed on Facebook and elsewhere, Marines and veterans helped track him down. Martinson lost the tag in Vietnam in 1968. Facebook hide caption

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