In 1970, Weatherman members Ted Gold, Terry Robbins, and Diana Oughton were killed when a bomb they were building blew up. This was called the Greenwich Village town house explosion. Ayers and several other Weathermen were able to avoid being caught following this explosion. Ayers was not facing charges at this time, but the federal government later brought charges against him. Ayers was part of the bombings of New York City Police Department headquarters in 1970, the United States Capitol building in 1971, and the Pentagon in 1972. Ayers wrote, in 2001, that: Although the bomb that rocked the Pentagon was itsy-bitsy - weighing close to two pounds - it caused 'tens of thousands of dollars' of damage. The operation cost under $500, and no one was killed or even hurt. 