
Visible crew/equipment: At the beginning of the movie when the Comedian is fighting with the mysterious masked man in his apartment and the first one is launched towards the table, the director Zack Snyder is hidden behind the kitchen counter and kneeling (this mistake is revealed by Snyder himself in the DVD extras).
Answer: The short answer is that they weren't really trying to. Ozymandias later revealed, and monopolised on, his costumed identity, Comedian was officially endorsed by the U.S.A. Government at the time so his real identity would have been public record, the first Silk Spectre publicly revealed her identity after retiring, though there is no evidence that the current Silk Spectre has. There is no evidence (even in the graphic novel) that anyone tried to hide their identity to the extent that other comic-book heroes like Batman/Superman do. The only exception being Rorschach where even his follow costumes don't know his real identity until they bust him out of prison.
Sanguis