The “advance team” could easily send a picture to the crew of AF1 especially to notify the pilots of the weather at their destination.
https://people.howstuffworks.com/air-force-one5.htm
In advance of every Air Force One flight, the Air Force crew sends C141 Starlifter cargo carrier planes, toting the president’s motorcade, to the destination. This collection of bulletproof limousines and vans, loaded with weaponry, keeps the president safe on the ground.
That is another possibility.