[quote=@Sep]

<Snipped quote by ZAVAZggg>

Example of them returning to sender? I don't recall ever seeing them return to where they were fired from.
[/quote]

Well, I might be mistaken given how it's been awhile since I've seen the show, but I could have sworn that the drones returned to the ships that fired them. Though looking back, I probably got it mixed up. As a matter of fact, if I'm starting to recall episodes of Atlantis correctly, the drones just flew off somewhere or exploded like in that video above.