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SOCHI, Russia (CNN) - Mounting concerns in Russia this morning as the Olympic torch relay makes its way through the bomb-stricken city of Volgograd.

Two extremists in this video claiming responsibility for two back-to-back suicide bombings last month --that claimed 34 lives and warning that more attacks could come during the Sochi Olympic Games.

In the hour-long video, the purported suicide bombers are seen constructing explosives and explaining their motives. All before heading to their targets triggers in hand.

The two men apparently part of an Islamist militant group vowing to "prepare a present" for the Olympics and "all the tourists who'll come over."

Members of congress are very concerned if something does happen what is the evacuation plan and emergency response would take place.

Others worried about Americans heading to Sochi.

"I am very concerned about the security status of the Olympics. I do believe the Russian government needs to be more cooperative with the United States when it comes to the security of the games."

Russian president Vladimir Putin deploying a security force of 40,000 police officers and soldiers to the region.

In an interview with ABC News, Putin says that he will "do whatever it takes" to keep athletes and visitors safe and pledging that Russia has "adequate means" of security.

Security around the Olympic venues on high alert metal detectors and bomb-sniffing dogs visible as the games get underway in just over two weeks.

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