Bridger Hunt is still in critical condition at Primary Children's Medical Center, a day after a 13-hour surgery designed to salvage his leg.

The boy's family, however, said he is improving.

"He is doing way better," Travis Shaw, Bridger's stepfather, said Wednesday night. "They are looking at pulling his tube out around 10 tonight. We are all on cloud nine. We can't wait to talk to him."

The 11-year-old Orem boy was grievously injured July 24 when a Lehi man lit homemade fireworks. The ensuing blast tore into the boy, who was riding his bike 30 feet away. He was taken by air ambulance to Primary, where he's expected to remain for many weeks and perhaps months.

Prosecutors have announced felony charges related to the blast against Craig A. Miller, 45, of Lehi. They include a second-degree felony count of possession or control of an explosive or incendiary device, and child abuse and obstruction of justice, both third-degree felonies.

Miller will appear for the first time in 4th District Court at 2 p.m. Aug. 26 in front of Judge Fred Howard, said Deputy Utah County Attorney Craig Johnson.