I was walking the dog, and when i looked back to call him, i saw this two big balls flying by. they have different speed. it was really weird... i stopped the video to take a picture. it's not so good one... i thought immediately it was an ufo, i am near the faro airport and know exactly how are the planes and helicopters. when i get home i showed the video to everyone and everyone says it was really very weird. i tried to get some answers online in portuguese, and nobody could explain anything, or others didn't even respond my emails. someone gave me this website to report it, but i didn't do it for a long long time, just because i don't understand some of this questionary. recorded with samsung galaxy s5