Military and government officials say they've got their eyes open for any chance that terrorists might avenge the death of Osama Bin Laden by launching an attack in Wyoming.

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The Wyoming National Guard has boosted its security a notch on the advice of the U.S. Northern command. The Guard usually only does that when it's holding drills.

Col. Greg Porter Chief of Staff for the Wyoming National Guard, says he can't remember any time in the last 10 years when the guard boosted security outside of a drill.

The Wyoming Tribune Eagle reports the Wyoming Office of Homeland Security is encouraging heightened vigilance. F.E. Warren Air Force Base in Cheyenne also says it has tightened security.