Migrants wait to disembark at the Catania harbor in southern Italy on April 24. In recent weeks, hundreds of migrants leaving Libya have drowned trying to cross the Mediterranean Sea to European countries, including Italy, Spain and Greece. Alessandra Tarantino/AP hide caption

itoggle caption Alessandra Tarantino/AP

Parallels

Flood Of Desperate Refugees Tests Spaniards' Tolerance

Arab and African migrants are landing on Spain's coast in a region with a 34 percent unemployment. That's created friction and prompted a debate about how best to help them.

The National Guard Bureau commissioned this painting, "Indiana Rangers: The Army Guard in Vietnam," as part of its series of paintings depicting significant moments in Guard history. It represents members of the Company D, 151st Infantry division — one of a few Guard units deployed to Vietnam — on duty in the jungle Mort Kunstler/National Guard Bureau hide caption

itoggle caption Mort Kunstler/National Guard Bureau

Back At Base

International Guard: How The Vietnam War Changed Guard Service

During the war, young men often tried to join the National Guard to avoid being sent overseas. But that war changed the nature of the guard — paving the way for today's deployments abroad.

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The National Guard Bureau commissioned this painting, "Indiana Rangers: The Army Guard in Vietnam," as part of its series of paintings depicting significant moments in Guard history. It represents members of the Company D, 151st Infantry division — one of a few Guard units deployed to Vietnam — on duty in the jungle Mort Kunstler/National Guard Bureau hide caption

itoggle caption Mort Kunstler/National Guard Bureau

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A reporter stands outside the front door of a house registered to a trading company operated by Navinder Singh Sarao in Hounslow, west of London. on April 22, 2015. Sarao was arrested in connection with the Wall Street flash crash of 2010. Adrian Dennis/AFP/Getty Images hide caption

itoggle caption Adrian Dennis/AFP/Getty Images

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The Hooker 100-inch reflecting telescope at the Mount Wilson Observatory, just outside Los Angeles. Edwin Hubble's chair, on an elevating platform, is visible at left. A view from this scope first told Hubble our galaxy isn't the only one. Courtesy of The Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, Calif. hide caption

itoggle caption Courtesy of The Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, Calif.