 Participating in the meeting were Deputy Attorney General David W. Ogden, Assistant Attorney General Lanny A. Breuer, acting ATF Director Kenneth E. Melson, Drug Enforcement Administration (DEA) Administrator Michele Leonhart, Director of the Federal Bureau of Investigation Robert Mueller and the top federal prosecutors in the Southwestern border states.They decided on a strategy to identify and eliminate entire arms trafficking networks rather than low-level buyers.Those at the meeting apparently did not suggest using the "gunwalking" tactic, but Phoenix ATF supervisors would soon use it in an attempt to achieve the desired goals.