did carry its entire slate of games in 2009 in HD, though a few non-essential camera positions for some games (mainly used only in analysis situations) continued to be shot in 4:3 SD. Beginning with the 2013 season, CBS Sports switched to a 16:9 full widescreen presentation, which began requiring the use of the #10 Active Format Description tag to present the games in a letterboxed widescreen format for viewers watching on cable television through 4:3 television sets. CBS introduces the "CBS Eye-lert" For the 2007 season, CBS announced the advent of "CBS Eye-lert," a service that allows viewers to be notified via e-mail and text message when the start time of a program will be delayed. The "Eye-lert" was eventually extended on-air to a banner graphic that appears during the prime time lineup within sports broadcasts and segments of delayed regularly scheduled evening programs. During Week 7 of the 2008 season, a power failure at Buffalo's Ralph Wilson Stadium caused problems leading to the regular broadcast team of Greg Gumbel and Dan Dierdorf being unable to call portions of the game (the Buffalo Bills vs. the San Diego Chargers). Video was still available, and so James Brown called portions of the game from the studio, with the rest of the NFL Today team providing color commentary. 2010s With an average U.S. audience of 106.5 million viewers, Super Bowl XLIV on CBS was, at the time, the most-watched Super Bowl telecast in the championship game's history as well as the most-watched program of any kind in American television history, beating the record previously set 27 years earlier by the final episode of M*A*S*H, which was watched by 105.97 million viewers. The game telecast drew an overnight national Nielsen rating of 46.4 with a 68 share, the highest for a Super Bowl since Super Bowl XX in 1986; and drew a 56.3 rating in New Orleans and a 54.2 rating in Indianapolis, first and fourth respectively among local markets. Super Bowl XLV surpassed the record a year later and was itself topped by Super Bowl XLVI in 2012. On November 28, 2010, CBS broadcast its 5,000th NFL game. On December 14, 2011, the NFL, along with Fox, NBC and CBS, announced a nine-year extension of the league's rights deal with all three networks to the end of the 2022 season. The extended contract includes the continued rotation of the Super Bowl