PRINCETON, N.J., July 10 (UPI) -- New Jersey-based power-generation company NRG Energy rejected a modified takeover bid from rival Exelon but welcomed future negotiations.

WASHINGTON, March 24 (UPI) -- No U.S. Essex-class aircraft carrier was ever sunk in World War II. No U.S. nuclear-powered aircraft carrier has ever been sunk or seriously disabled by enemy action. Since the first U.S. nuclear-powered carriers were built nearly half a century ago, they have never been involved in a sea war with any enemy capable of seriously threatening them.

PRINCETON, N.J., Nov. 10 (UPI) -- New Jersey-based NRG Inc. on Sunday rejected a $6.1 billion takeover bid from Exelon.

WASHINGTON, July 18 (UPI) -- Anti-Submarine Warfare has been the Cinderella of global navies for the past century, and unfortunately the situation hasn't changed much today.

WASHINGTON, May 30 (UPI) -- U.S. warship designers for decades have ignored the fundamental lesson of the hit movie "Iron Man" -- armored protection matters.

TORONTO, May 21 (UPI) -- An undercover and deliberately suspicious Canadian broadcaster's investigation of Ontario casino pay-outs found loopholes for possible money-laundering.

WASHINGTON, April 16 (UPI) -- What matters most with weapons systems is whether the systems will actually work reliably, and how much punishment they can take.

WASHINGTON, April 10 (UPI) -- More than 40 years ago, there was a British heavyweight boxing champion called Henry Cooper who could do everything -- except take a punch.

WASHINGTON, April 1 (UPI) -- Russian and Chinese naval weapons designers know they lack the resources and the technology to match the awesome power of U.S. aircraft carrier battle groups ship for ship and plane for plane. So instead, for decades, they have opted for asymmetrical solutions to the problem of killing U.S. super carriers. And they have come up with some lethal weapons.