The president will announce changes in the way the U.S. conducts unmanned drone strikes after disclosing that a fourth U.S. citizen had been killed in secretive strikes abroad. British officials say the attack appears to be a terrorist strike, possibly motivated by radical Islam. Officials say the man linked to Tamerlan Tsarnaev implicated himself in a 2011 triple shooting in suburban Boston. The Scouts' national leadership will cast ballots on a resolution that won't exclude Scouts based on sexual orientation. Ten children were among the 24 people killed by the tornado, including 9-year-old softball star Sydney Angle and JaNae Hornsby, who could light up a room. The AP reports the Japan plant that melted down in 2011 can barely keep enough workers to monitor the three broken reactors, with some workers quitting because of radiation exposure. The mountain states of Colorado, Idaho, Arizona, Nevada and Utah saw the biggest drops, and Hispanic rates dropped sharply in more than 20 states. An 80-year-old Japanese mountaineer reached the summit today, but his record may only last a few days: An 81-year-old Nepalese man is right behind him. Zach Sobiech, whose song "Clouds" became a YouTube sensation that attracted more than 4 million views and led iTunes, died of bone cancer at 18. James made a layup as time expired in overtime to put the Heat ahead of the Pacers, 103-102 in a wild Game 1 of the Eastern Conference finals.