Breaking News from CBS

• Taliban: We killed 4 U.S. troops at Afghan air base

  Group claims responsibility for the deaths on same day U.S. confirms it will hold peace talks with Taliban

• Google asks FISA court to lift gag order on NSA surveillance program

  Legal motion aims to mend Google's reputation and clarify its role in providing information to the NSA

• Reporter Michael Hastings dies at 33

  Journalist, best known for the Rolling Stone profile that led to Gen. McChrystal's retirement, died in an L.A. car accident

• Video: 6/18: Officials say NSA stopped over 50 potential terror attacks; Hi-tech giant creates next generation of Edisons

  General Keith Alexander said the NSA's surveillance programs have helped stop more than 50 potential strikes since the 9/11 attacks. At least 10 of them involved homeland-based threats. Bob Orr reports; and, in a pilot program in Tucson, Ariz., aerospace and defense contractor Raytheon is spending $100 million in hopes of inspiring future engineers and technology professionals. Anthony Mason reports.

• Video: Two teens stranded 8,000 feet up on cliff rescued by chopper

  In Sierra Buttes, Calif., two boys hiked up a jagged cliff and ended up stranded 8,000 feet up. The California Highway Patrol sent a chopper and had to lower a harness to carry them to safety, since climbing down was not an option. Scott Pelley reports.