Hello, I am active duty army in TN/KY. Me and the girlfriend just moved into a cheap apartment in the nearby town. Being a cheap apartment complex there are some shady characters around. Recently someone has targeted my girlfriend. It started the other day, I had left for work early in the morning around 4am. Around 550am while she was getting ready for work someone was aggressively trying to turn the door knob to get in, and then left. Police came, nothing came of it. The next morning I was off and home. Her car and my jeep both in the driveway. Around 6am a note was found on her car reading "almost got you". This note had recently been placed as there was dew on the car and the not was dry. She left for work and I was home all day. I was called in to work late afternoon that day. The hour between me leaving and her getting home another note was placed on our door saying "I'm watching you". So there's someone trying to get to her it seems, and they will probably try to gain entry again once they see I'm absent again. I already carry a gun at all times and I have her carrying police grade OC spray. I'm not sure what else I can do. Police are going to be no help until she is either attacked or I shoot the guy. Any ideas on something I can do? Moving is not really a viable option at the time. Thank you.