a Greenwich Village townhouse on March 6, 1970, when one of the bombs detonated. Oughton, Gold, and Robbins were killed; Wilkerson and Boudin escaped unharmed. They were making the bombs in order to kill Army soldiers and non-commissioned officers (NCO) who would be attending an NCO dance at Fort Dix, and to randomly kill people in Butler Library at Columbia University. An FBI report stated that they had enough explosives to "level… both sides of the street". The site of the Village explosion was the former residence of Charles Merrill, co-founder of the Merrill Lynch brokerage firm, and the childhood home of his son James Merrill. James Merrill memorialized the event in his poem 18 West 11th Street, the address of the brownstone townhouse. Underground strategy change After the Greenwich Village townhouse explosion, per the December 1969 Flint War Council decisions the group was now well underground, and began to refer to themselves as the Weather Underground Organization. At this juncture, WUO shrank considerably, becoming even fewer than they had been when first formed. The group was devastated by the loss of their friends, and in late April 1970, members of the Weathermen met in California to discuss what had happened in New York and the future of the organization. The group decided to reevaluate their strategy, particularly regarding their initial belief in the acceptability of human casualties, and rejected such tactics as kidnapping and assassinations. In 2003, Weather Underground members stated in interviews that they had wanted to convince the American public that the United States was truly responsible for the calamity in Vietnam. The group began striking at night, bombing empty offices, with warnings always issued in advance to ensure a safe evacuation. According to David Gilbert, who took part in the 1981 Brink's robbery that killed two police officers and a Brinks' guard, and was jailed for murder, "[their] goal was to not hurt any people, and a lot of work went into that. But we wanted to pick targets that showed to the public who was responsible for what was really going on." After the Greenwich Village explosion, in a review of the documentary film The Weather Underground (2002), a Guardian journalist restated the film's contention that no one was killed by WUO bombs. Declaration of war In response to the death of Black Panther members Fred Hampton and Mark Clark in December 1969 during a