After nearly two weeks in intensive care and critical condition the University of Iowa Hospitals and Clinics, the Clinton firefighter badly injured earlier this month in an explosion is making big strides.Adam Cain, 23, now is listed as being stable and has been relocated to a different level of care.“Adam has started physical therapy, and he was able to walk about 100 feet” Sunday, according to an update provided Monday by Clinton City Administrator Matt Brooke.