The Watertown Police Department has half a dozen new police officers patrolling the streets after the WPD’s latest recruits were sworn in on Thursday afternoon. Police Chief Michael Lawn welcomed the new officers: Megan Murphy, Kyle Rooney, Don Pham, Lauren Giordano, Michael Del Russo and Colin Geaghan. All six made it through the WPD’s vetting process, including numerous interviews, a background investigation, physical and psychological testing. Then they attended a 24-week Police Academy. The new officers have already experienced an intense situation.