ROCKVILLE, MD. — In this day and age of specialization, police report that one thief, or gang of thieves has perfected their skills to the point of being able to pull off dozens of crimes by taking advantage of women (or men with purses), who leave their vehicle unlocked while gassing up at the pump. The evil-doers hop into the vehicle and swipe valuables and purses while the victim is distracted by talking on the cell phone while pumping gas