The horn echoed off the hillsides of Pittsburgh's South Side from the fields of the Steelers' facility, signifying the end of a 2½-hour practice.

More than 30 minutes later Sunday, wide receiver Antonio Brown finally emerged in the Steelers' emptying locker room. Several veterans were showered, dressed and out the door, but Brown was still carrying his stained and sweat-filed pads.

"Just trying to get in what I can get in," he said. "It usually takes a while, so it keeps me out there."

Brown being among the last to leave the field has been one of the few constants of Steelers training camp — first at St. Vincent College in Latrobe, Pa., and now back in Pittsburgh.