IRVINE, Calif. -- Case Keenum was pretty sure he hadnt been on a bicycle since he was about 12 years old.The quarterback struggled to get his bike over the low curb as he rolled up to the Los Angeles Rams training camp at UC Irvine on Thursday.Even when theyve got both feet on the ground, this whole year is a remarkable new challenge for the Rams. But relocation hasnt dampened their enthusiasm for the possibilities of a new season.I think itll be exciting, Keenum said after riding his new mode of transportation up to the players dorm complex. First time back in LA. First time back in the Coliseum, and it goes on and on from there. Im just excited to get on the field.The Rams veterans officially began arriving in Orange County on Thursday, and their first public practice is scheduled for Saturday.With HBO cameras filming their every move for the Hard Knocks documentary series, theyve begun roughly five weeks of camp in Irvine while their training complex is finished in Thousand Oaks.A lot of firsts here, yeah, Keenum said. The first time cameras have followed me into my dorm when Im checking in at training camp. The first time theres a camera in our meeting room, a lot of that stuff. ... But its still football. This comes with it, and were going to enjoy it.The Rams have plenty of work to do when they begin workouts. While the newness of their surroundings will probably take months to wear off, the players and coaches are eager to show progress this fall after the franchises fourth straight losing season under coach Jeff Fisher.At least their moving arrangements are largely finished, with nearly everybody settled into homes near their permanent base. Training camp will be long, but the veteran Rams only see opportunities for bonding.Its been a hassle, but its a great feeling just to have something new to look forward to, left tackle Greg Robinson said.Im pretty sure that nobody else is going through what were going through, but well just stick together as a team, and hopefully we have one of the best camps weve ever had. The way we transition is going to make the team stronger.Keenum has already got to work with No. 1 draft pick Jared Goff and the other key components of the Rams passing game. They spent time working together between offseason workouts and training camp, trying to build chemistry before the preseason.We thought wed try to work a little bit and not just sit around on the couch and eat Cheez-Its all summer, Keenum said.No, we had a really good summer. I think we made a jump. Guys stuck around, worked hard. I think I saw just about every receiver and tight end we had out at throwing sessions. I think we made a step forward, and Im looking to hit the ground running coming up.The Rams will begin several position battles this weekend, particularly on defense. The departures of secondary mainstays Janoris Jenkins and Rodney McLeod have opened up two starting jobs.Cody Davis is eager to compete for McLeods role at free safety, and moves into camp with a clear head after the upheaval of the past six months.Its definitely a little bit of a distraction, Davis said of relocation. Youve got just to focus that much harder. 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