INQUIRER: Another Philadelphia police officer has been gunned down in the line of duty, this time in an apparent shoot-out tonight in front of the Olney Transportation Center. Initial reports were that he was wounded after he and his partner responded to a report of a “fight on the highway” on Broad Street near Olney Street. Officer John Pawlowski, 25, who was assigned to the 35th Police District, was the first to be killed in the line of duty this year. The newly married whose wife is expecting their first child is the fourth city officer to be fatally shot by a criminal since on Oct. 31, 2007, when Officer Charles Cassidy, also of the 35th, was fatally wounded breaking up a robbery. Sources said there was a fight between two cab drivers. According to the source, one of the cabbies said: “I’m going to call the cops.” The other responded: “If you call the cops I’m shooting you and the cops.” Moments later Pawlowski and his partner, who was not identified, arrived on the scene and the gunman began firing, fatally shooting the officer who fell as his partner returned fire. MORE