It was a sight to warm the hearts of all Essendon supporters - Bomber mid-fielder Chris Heffernan moving freely and with a smile on his face. It has been a long 10 weeks for Heffernan who has been sidelined after injuring a knee during the pre-season. For weeks he has been stuck in the gymnasium boxing and lifting weights while his teammates have been outside sharpening up their skills. It's no wonder he had a smile on his face when he came off the track last night. ""It feels like an eternity since I have done that,"" Heffernan said. ""The knee felt pretty good so I'm a chance to play a quarter this weekend in the VFL game but that will be up to the medical staff.""