A resident of Fairfax County had been out of the country for weeks, and when she returned home, she had a surprise, according to the county police. She found two strangers living in her apartment, the police said. Police said it was about 5:20 p.m. on Thursday when she returned home to the apartment in the 7000 block of Republic Court. The address is in the Hybla Valley area, in the southeastern part of the county, a few hundred yards east of Richmond Highway. When she found the two men, she called 911, and they fled, police said.