After years of debate and months of preparations, the military can no longer prevent gays from serving openly in its ranks. The repeal of the 1993 law known as "Don't Ask Don't Tell" took effect Tuesday, Sept. 20, 2011

Residents and tourists in Montauk, New York, ventured out to the beach Saturday morning to get a glimpse of some of the waves and wind from Hurricane Irene which was still hundreds of miles away on Aug. 27.

The AlphaDog Proto is a lab prototype for the Legged Squad Support System, a robot being developed by Boston Dynamics with funding from DARPA and the US Marine Corps. When fully developed the system will carry 400 lbs of payload on 20-mile missions in rough terrain. The first version of the complete robot will be ready in 2012. This video shows early results from the lab where we are developing the control systems and locomotion platform. This lab prototype is powered remotely. AlphaDog will draw power from an internal combustion engine, which we designed to be 10x quieter than BigDog. The field version of AlphaDog will have a sensor head packed with terrain sensors. Boston Dynamics leads a development team that includes AAI Corp, Bell Helicopter, CMU/NREC, FEV, JPL and Woodward HRT.

Leaders, experts and citizens around the world are reacting to news of the death of Osama bin Laden in a U.S. military operation. (May 2, 2011)

The Gray Eagle. 40th Combat Aviation Brigade Unmanned Aerial System.

In the water, Michael Phelps is a force to be reckoned with. But his dominance in the pool isn't just a physical attribute. Phelps's exacting mental standards and preparation propel him beyond other swimmers

Battleship is an upcoming 2012 science fiction naval war film based on the game of the same name. The film is being directed by Peter Berg and will be released by Universal Pictures. Starring in the film are Taylor Kitsch, Alexander Skarsgård, Brooklyn Decker, Rihanna and Liam Neeson. Battleship 2012 movie is a story of an international Navy fleet engaged in a very dynamic and intense battle against an alien race known as "The Regents". R&B singer Rihanna makes her acting debut in the film.

The formation of a recent tornado in New England. This is the latest footage coming from Springfield, Mass.

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Forecasters say Irene's sustained hurricane-force winds have slammed into the North Carolina coast. Irene is expected to continue churning its way up the U.S. East Coast through some of the most densely populated areas of the United States.(Aug. 27).