This morning at 5:30 a.m.(extremely dark out) I was loading my car with what I needed for work, and getting ready to put my trash at the end of the road, my car is already running(due to it being about 50 and brisk) and the parking lights are on. I live in the county and my front porch sits about 20 yards from the road. There have been numerous break-ins in my area, including my next door neighbor, about 8 months ago. As I am walking back to my porch to grab our weeks worth of trash, a car comes to a sudden stop directly in front of my driveway. I immediately open my door and yell to my wife, "BRING ME MY GUN, NOW." As I stand there under my side porch light waiting for my wife to bring me my gun(springfield xdm9) the car pulls forward 10 feet, then backs up, then pulls forward again, and then pulls into the drive across the street, then backs out of the driveway to where they initially stopped in front of my drive. By then my wife has handed me my pistol and I have it cocked and at my side, out of site of the driver. I then tell my wife to turn on the flood lights on the front porch, the car pulls forward about five feet and sits there. I stand there for what seems like about 30 secs to a min(gun out of his line of site and just stare at the car, which I cannot see into b/c its dark and the windows are tinted). they pull forward one more time, and then back up again. At this point I'm fed up and I assume the down and ready position, both hands on my pistol aimed down at about 40 degrees and say "CAN I HELP YOU"(as loud as i can without shouting) obviously ready for them to make the wrong move. They then proceed to pull off quickly but stop again about 50 yards down the road. I walk off the side porch to the front yard and stand there, then they speed off. What do you guys think of my actions, did I miss something, should I have done something different? I respect all of you guys and your opinion(-the mall ninjas) and I sincerely would like your thoughts.