Security for Obama inauguration prepares for lone wolf

Thousands of police and troops are preparing for a major security operation to protect United States President Barack Obama during his second-term inauguration on January 21.

While the crowd is expected to be half the size of President Obama's first-term inauguration, the Secret Service, FBI, police and military will be on the lookout for a lone wolf assassin. Special nuclear, chemical and biological detection trucks will be deployed across the city, the Australian reports.

"The thing that keeps you awake at night are the lone offenders, regardless of their affiliation," Michael Clancy, the deputy assistant director of the FBI's counter-terrorism division, said, according to the Australian. "These are the ones that scare me the most, folks that we don't have on our radar. It's the Timothy McVeighs of the world."

Timothy McVeigh was an American who killed 168 people during a 1995 attack on an Oklahoma federal building.

Approximately 8,000 police officers and 13,500 troops will be on hand during the ceremony. Only 120 troops were present during President George W. Bush's second-term inauguration in 2005.

"We're very vigilant, along with the Secret Service, in reporting threat streams and addressing them very aggressively, which we will do approaching the inauguration," Clancy said, according to the Australian. "It's a challenge for us to separate those talkers from the actors. It might be a militia group that thinks, 'Oh my God, this president is going to take our guns', or it might be another group who thinks, 'Oh my God, we have an African-American in the White House, what's coming to our world?'"

The ceremony on January 21 will mark the 57th presidential inauguration, the Australian reports.