BLITZER: Russia's newest passenger jet goes missing on a demonstration flight with dozens of people onboard. Mary Snow is monitoring that and some of the other top stories in THE SITUATION ROOM right now. Mary, what's going on?</s>MARY SNOW, CNN CORRESPONDENT: Wolf, as many as 50 people were onboard that jetliner when it disappeared from radar screens over a mountainous region of Indonesia. Search teams are trying to reach the area, but authorities called off an air search due to high winds. The plane is a short to medium range civilian jet liner and it had taken off from the Indonesian capital of Jakarta and it was making a third stop of the demonstration tour to Asia. Responding to a backlash against massive closures the Postal Service has decided to cut hours of 13,000 rural facilities. Some of them will be open two hours per day. It's part of an effort to save $55 million annually. Some communities will have the option of having the local post office be operated by a private company. And Major League baseball history was made last night. The Rangers' Josh Hamilton went 5 for 5 with four home runs and a double. It's one of the greatest hitting performances ever. He is only the 16th player to hit a homer four times in a game and he's only the second player ever to hit for 18 total bases just short of the record -- Wolf.</s>BLITZER: One short of the record indeed, an amazing, amazing feat. Congratulations to him. Mary, thank you. The U.S. Senate is rocked by a political earthquake as the longest-serving Republican goes down in a public defeat. Also, James Carville's warning and it's a serious one, to Democrats out there. All of that coming up as well as more on the breaking news coverage, the president of the United States now supporting same-sex marriage.
New Russian Jetliner Disappears On Demo Flight; Postal Service Backs off Plan for Closures; Historic Hitting by Rangers' Hamilton