 The second was to create underground collectives in major cities throughout the country.Larry Grathwohl, a Federal Bureau of Investigation informant in the Weathermen group from the fall of 1969 to the spring of 1970, stated that "Ayers, along with Bernardine Dohrn, probably had the most authority within the Weathermen".After the Greenwich Village townhouse explosion in 1970, in which Weatherman member Ted Gold, Ayers's close friend Terry Robbins, and Ayers's girlfriend, Diana Oughton, were killed when a nail bomb being assembled in the house exploded, Ayers and several associates evaded pursuit by law enforcement officials.