Tim Hightower close to full strength?

Redskins RB Tim Hightower is less than 8 months removed from tearing his ACL, but it sounds like he's close to 100%.  Hightower was cleared to return to the field and has been participating in positional drills in this week's minicamp.  HC Mike Shanahan says that Hightower could do even more if we were closer to the regular season.  “He’s doing good,” Shanny said. “I think he’s really wanting to practice right now, but he does have five, six weeks [until training camp]."  Hightower was a workhorse for the 'Skins last year before going down, toting the rock  84 times in 5 games.  If that knee holds up, he's certainly a threat to Roy Helu's role as the team's lead back.