Two oval-like craft seen over Fort Smith, AR, by 2 teens.My friend and I were walking around a school-yard talking when we looked up and saw one craft oval-shaped what appeared to come INTO our atmosphere and just stopped. After about 10-20 seconds another craft came in and moved into position next to the first craft. Then they slowly moved as me and my friend sprinted into their direction not taking our eyes off the craft. The first craft light blinked then slowly descended, the second craft following the movements about 5-7 seconds later. After that we lost track of them and just stood looking in that direction just confused.10-15 minutes of discussion still steadily keeping track of the area we noticed a Chinook. It landed in about the same vicinity of where the two craft descended. We decided to keep watch by climbing on about 10ft posts. The Chinook ascended and ended up flying over where we were and that is when we were able to confirm it was a Chinook. We got slightly uneasy about this and ran back to my friend's house to think about what we just saw and how we would describe it.