There is absolutely no reason for concern,” Chertoff said. “It’s just that the folder was supposed to be on Sheila’s desk by the end of the day today, and it would be reassuring if it were returned. But I stress that this is not a particularly urgent matter because, again, it’s not absolutely essential to national security. However, if we could get it back by 3 p.m. on Feb. 27, that would be for the best for all of us.