Article Photos: Security boosted at US sites after Libya attack



Philippine policemen stay beside a machine gun as they secure an area in front of the U.S. Embassy in Manila, Philippines on Thursday Sept. 13, 2012. Manila police tightened security in the area following an attack that killed the U.S. ambassador and three other Americans in Libya. (AP Photo/Aaron Favila)

Philippine policemen stay beside a machine gun as they secure an area in front of the U.S. Embassy in Manila, Philippines on Thursday Sept. 13, 2012. Manila police tightened security in the area following an attack that killed the U.S. ambassador and three other Americans in Libya. (AP Photo/Aaron Favila)