Paul Klee: Rule No. 1 of Broncos camp - don't take Peyton Manning for granted

Denver Broncos football players run to their workout stations during off season training camp at the NFL football team's training facility in Englewood, Colo., on Monday, May 10, 2013. (AP Photo/Ed Andrieski)
Denver Broncos football players run to their workout stations during off season training camp at the NFL football team's training facility in Englewood, Colo., on Monday, May 10, 2013. (AP Photo/Ed Andrieski)
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