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"We're paranoid in scouting because you don't want to miss anything," Campbell said. "My worst fear, in terms of preparation for the draft or free agency, is that you've missed something. You have to make sure you've taken care of all the details. You have to be prepared."

The Redskins declined to pursue free agents to address most of their needs, so they will rely on the draft to fill holes along the offensive and defensive lines, at wide receiver, cornerback and safety. The team also plans to use a pick on a quarterback to fill the No. 3 job behind starter Jason Campbell and backup Todd Collins.

The Redskins also are strongly considering taking an offensive lineman in the first round, said several sources involved in Washington's process. The Redskins are expected to consider trading down.

The age and the health of the offensive line are among the team's top concerns, so the Redskins hope to draft a versatile lineman who could challenge for time at guard immediately and could even start soon at tackle, sources said. Virginia guard-tackle Branden Albert (6 feet 7, 315 pounds) is highly regarded by the Redskins, sources said, and he would be considered a steal at 21.