Angelo J. Lano was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 field agent for the Federal Bureau of Investigation

Federal Bureau of Investigation

The Federal Bureau of Investigation is an agency of the United States Department of Justice that serves as both a federal criminal investigative body and an internal intelligence agency . The FBI has investigative jurisdiction over violations of more than 200 categories of federal crime...

 in Washington DC, notable for his work heading the investigation of, and appearing as a witness for, the Watergate scandal

Watergate scandal

The Watergate scandal was a political scandal during the 1970s in the United States resulting from the break-in of the Democratic National Committee headquarters at the Watergate office complex in Washington, D.C., and the Nixon administration's attempted cover-up of its involvement...

 surrounding President

President of the United States

The President of the United States of America is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces....

 Richard M Nixon. Lano was one of a number of FBI agents who was said to have been as source of information for Carl Bernstein

Carl Bernstein

Carl Bernstein is an American investigative journalist who, at The Washington Post, teamed up with Bob Woodward; the two did the majority of the most important news reporting on the Watergate scandal. These scandals led to numerous government investigations, the indictment of a vast number of...

 and the Washington Post during the investigation, and this helped shift White House

White House

The White House is the official residence and principal workplace of the president of the United States. Located at 1600 Pennsylvania Avenue NW in Washington, D.C., the house was designed by Irish-born James Hoban, and built between 1792 and 1800 of white-painted Aquia sandstone in the Neoclassical...

 suspicions away from Mark Felt, who was revealed as informant Deep Throat

Deep Throat

Deep Throat is the pseudonym given to the secret informant who provided information to Bob Woodward of The Washington Post in 1972 about the involvement of United States President Richard Nixon's administration in what came to be known as the Watergate scandal...

on May 31, 2005.