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Posted by ESPN.com's Paul Kuharsky

	Andy Lyons/Getty Images
	Marvin Harrison looks to rebound from an injury-marred 2007 season.

TERRE HAUTE, Ind. -- The Colts officially wrapped up training camp this morning, with players and staff moving out of the dorms and offices at the Rose-Hulman Institute of Technology.

Here are thoughts on some key topics that the team carried into and out of camp:

Injuries have tested depth.

Fans here saw a lot of the Colts depth tested as quarterback Peyton Manning (knee), defensive end Dwight Freeney (foot) and safety Bob Sanders (shoulder) didn't take a single snap. A couple of other key players were also out all of camp: guard Ryan Lilja, linebacker Tyjuan Hagler and rookie tight end Tom Santi. There was no sense of panic around a team that's been pretty good at plugging in replacements and moving forward, though being without so many stars at once was certainly disconcerting.

Marvin Harrison is back.

The one good development on the injury front was the return of Marvin Harrison. Back from a knee issue, he was cutting sharply on the first day of camp and at the end, with an appearance in the team's second preseason game in between.

Reserve running backs are still up in the air.

Joseph Addai and Dominic Rhodes are set as the top two backs, but there is still time for the rest of the roles and roster spots to be sorted out. Mike Hart's been impressive with a 12.2-yard average on 12 carries through two games. Kenton Keith is not a great pass protector or pass catcher, which could mean he loses out to Clifton Dawson. Chad Simpson looks like he's en route to the practice squad.

Could there be a third quarterback?

While Jim Sorgi's role as Manning's primary backup does not appear to be in jeopardy, the Colts did sign two veterans in time to help handle the camp load. Might Quinn Gray or Jared Lorenzen be on the opening day roster if the Colts decide to carry a third QB for the first time in years? If so, it might be the biggest indicator that the team carries lingering concerns about Manning into the regular season.

Right guard is still undecided.

Veteran Charlie Johnson has started both preseason games but then quickly rotated with rookie Mike Pollak. Johnson would provide more versatility if he winds up the backup, but it's too early to say for sure which way the Colts will go.