The Dallas Cowboys signed safety Eric Frampton on Wednesday and waived injured defensive tackle Robert Callaway.Frampton appeared in 13 games with two starts last season for the Cowboys. For his career, he has played 89 games, including two starts, and recorded 25 tackles, two tackles for loss, three pass breakups and one forced fumble on defense, while adding 112 tackles on special teams.The team’s safety positions are up for grabs. Barry Church, who is returning from the Achilles’ he tore in Week 3 last season, has been running first team in the Cowboys’ OTAs. Will Allen, signed in the off-season, and Matt Johnson, a fourth-round pick in 2012 who missed his rookie season with hamstring and back injuries, each have had first-team snaps at the other safety position. The Cowboys used a third-round pick on J.J. Wilcox, who also is expected to contend for playing time. — Charean WilliamsCoach’s heart surgeryArizona Cardinals quarterbacks coach Freddie Kitchens, a former Alabama quarterback, underwent heart surgery and the team said his early prognosis is “positive.”A team statement says Kitchens did not feel well and left Tuesday’s OTA practice. The team’s medical staff sent Kitchens to a hospital, where a CT scan revealed a defect in his aorta.Kitchens underwent surgery Tuesday night at the Arizona Heart Institute. The team says doctors who performed the surgery say it “went very well.”Super guestsThe Super Bowl champions visited the White House on Wednesday and got some good-natured ribbing from President Barack Obama who said linebacker Ray Lewis’ triceps injury was caused “by that dance he does” and he made note of safety Ed Reed’s graying hair with “you look like an old man.”But the best line of the day came from Ravens coach John Harbaugh. “We want to thank Mr. President for hosting us here today. It’s an unbelievable honor. We are grateful to be here. We have plans to be back next year.”Briefly • Packers: A team physical Monday revealed that running back DuJuan Harris had a fist-sized cyst on his lung. The cyst was drained and removed Tuesday morning, and Harris was back home Wednesday. • Steelers: Quarterback Ben Roethlisberger had “minor” surgery on his right knee, according to a team-issued statement, and is expected to “be completely healthy for the start of training camp.” • Broncos: Running backs coach Eric Studesville lost both his parents Tuesday when an 18-wheeler struck head-on the motorcycle of the Wisconsin couple on U.S. Highway 54 outside of Texhoma in the Texas Panhandle. • Chargers: Tackle D.J. Fluker, the 11th overall pick in the 2013 draft out of Alabama, signed a four-year, $11.4 million contract. • Cowboys: The Dallas Cowboys Star Magazine swimsuit issue is available and features cheerleader Emma Mary is on the cover. The magazine is available on ShopCowboys.com, Cowboys Pro Shops, and area Albertson stores.