of theatres in the Mid-Atlantic states of Maryland, Virginia, Tennessee, Georgia and North and South Carolina overlapped in some places with Regal's. As of a condition of approval of the merger, the United States Department of Justice required that Regal divest itself of several theaters in areas where it would have a monopoly. Regal agreed to sell off four theaters in the Asheville, Charlotte and Raleigh, North Carolina markets, but a large number of theaters still remains in all three markets. On May 17, 2009, Regal signed a deal with Sony Corporation to equip all of its theaters with Sony 4K digital projection over the next three to five years. In April 2010, Regal launched Regal Premium Experience (RPX), an upgraded theater format. Each RPX theater features a 60-foot screen, dual 30,000 lumen digital projectors, a 7.1 sound system, a Dolby Atmos sound system or an Auro 11.1 sound system with 273 loudspeaker components including eight 21 inch subwoofers. There are reclining leather seats with headrests. Both digital 2D and RealD 3D films can be screened. As of January 2016, there are 87 operating RPX locations. In June 2011, after posting a loss for the first quarter, Regal began downsizing its theater employees by removing managers from projection and replacing them with lower paid floor staff. This move allowed Regal to lay off part-time managers across the country and forcibly demote many full-time managers to part-time. As theaters converted to all digital automated screens, Regal also removed projectionists altogether. This focus on "cost control" helped the company post better than expected profits for the 3rd quarter of that year. In March 2014, AEG and Regal announced an agreement to add 4DX—a 4D film format—to its location at L.A. Live. As of 2018, it operated six 4DX screens nationwide, with plans to expand to at least 79. In December 2015, Regal took over managing operations of Cinebarre, a former joint venture between Regal Entertainment Group and Terrell Braly. There are eight Cinebarre locations in the Regal Entertainment Group circuit. These locations feature a full bar as well a full made-from-scratch restaurant menu which is delivered right to the customer's seat. In January 2016, Regal was issued a temporary injunction by a district court in the state of Texas following complaints by the Houston-based cinema chain iPic Entertainment, which found that Regal had colluded with 20th Century Fox, Sony, and Universal by