ALLEN PARK, Mich. -- Detroit Lions defensive tackle Nick Fairley and wide receiver Titus Young were back on the practice field Tuesday -- with security escorts to keep reporters away.

Fairley joined his teammates for a voluntary workout two days after he was arrested in Alabama for the second time in two months. He was charged Sunday with driving under the influence after troopers say he was speeding at 100 mph and didn't initially stop when they attempted to pull him over. Fairley was also arrested in April on a misdemeanor charge of possessing marijuana.

The 2011 first-round pick shook his head from side to side when asked if he had anything to say after the workout.

Young was prevented from hearing or answering questions from a reporter, but the second-year pro did issue a statement before attending the OTA -- in the wake of having punched teammate Louis Delmas earlier this month when the veteran safety wasn't looking.

"My recent actions have not always been up to the standards the Lions expect or the standards that I expect from myself," Young said. "I am truly sorry for those times when I didn't meet those standards.

"My absence from the practice facility and the OTAs last week was necessary for both myself and the team."

Young's punch followed the news of three players -- Fairley, Mikel Leshoure and Johnny Culbreath -- having marijuana-related run-ins with law enforcement earlier this offseason.

Detroit coach Jim Schwartz said he's concerned, angry and disappointed that stories about the promising team -- coming off its first playoff appearance since the 1999 season -- haven't focused on Matthew Stafford, Calvin Johnson and the vast majority of players on the roster who have stayed out of trouble.