Federal investigators are combing hospitals along the U.S.-Mexico border for at least two suspects who may have been injured in gunfire that killed a Border Patrol agent in Southern California.
A man who called University of South Florida police and said he had a gun never was found after a broad sweep of the campus, which was placed on lockdown during the scare.
Two astronauts made an extra-long spacewalk Friday to make up for lost time after a spacesuit glitch waylaid efforts to replace old space station batteries earlier this week.
An Iranian passenger plane skidded off the runway during landing in northeast Iran and crashed, leaving its front a tangled mass of wreckage and killing 17 people, the state news agency said.
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