Two Planes are flying in a straight line towards a stranded campsite and are trying to parachute in some supplies. The furthest plane away from the campsite (at point A) spots the camp at an angle of depression of 28°. The second plane that is closer (at point B) spots the camp site at angle of depression of 35°. If the planes are 800 feet apart and the closer plane drops supplies that roughly follow the straight line from point B to point C, how far will the supplies travel in the air? (i. e. what is the length of the segment BC?)