NEW YORK — The accused gunman busted early Tuesday for blasting sleeping homeless men in New York and Washington, D.C., was a methodical predator who shot three victims in the nation’s capital before heading north to find his last two targets, sources told the Daily News. “He’s very meticulous in his planning,” a high-ranking NYPD source said of the suspect nabbed in Washington after a massive manhunt. “He wore a mask and a hood and blue surgical gloves … There was a lot of consciousness in what he did.” Suspect Gerald Brevard III, a 30-year-old D.C. resident, allegedly killed one homeless m…
