Two men are on the loose, after robbing the U-Stop near 27th and Pine Lake Road just before 2:30 this morning (Monday).  Lincoln Police Captain Michon Morrow told KFOR News that the clerk reported that two black males wearing dark masks and clothing walked in, one of them pointed a handgun at him and demanded cigarettes and cash from the register. Both men took off on foot. Morrow says a K-9 track was unsuccessful. If you have information regarding the robbery, call Crime Stoppers at 402-475-3600.