Authorities say Texas, Missouri, officers shot in ambushes

San Antonio Police Department personnel investigate the scene after Det. Benjamin Marconi was fatally shot Sunday, Nov. 20, 2016, in San Antonio. Marconi was writing out a traffic ticket to a motorist when he was shot to death in his squad car Sunday outside police headquarters by another driver who pulled up from behind, authorities said. (Edward A. Ornelas/The San Antonio Express-News via AP)

Sheriff’s deputy ambushed, fatally shot from behind while pumping gas in Houston; suspect fled

Officials investigate the scene at a gas station where a sheriff’s deputy in uniform was fatally shot Friday, Aug. 28, 2015, in Houston. Karen Warren, Associated Press

Philippine aid convoy ambushed as troops quell looting

Philippine troops killed two armed insurgents who attacked an aid convoy en route to typhoon-devastated Tacloban on Tuesday, the military said, as soldiers were deployed to quell looting by hungry survivors. (AFP, Noel Celis)