Military and police personnel will be out in full force Tuesday as the expected 2-3 million people descend upon the nation's capital for President-elect Barack Obama's inauguration.
An army of police, Secret Service agents and military personnel will keep a close eye on Obama as he says the 39 words that will officially make him the nation's 44th president.
Inauguration security also includes technology ranging from satellites and surveillance cameras aimed at the city to electronic sensors sniffing the air for signs of radiation and biological or chemical weapons.
Source: ABC News,Inauguration Security: Combination of Manpower and Technology
