Mermelstein, who had told the DEA of the murder contract after his arrest in 1985, testified that Ochoa, Escobar, and Cardona had asked him to take the contract and provided him with money and weapons to do the job. He had seen Cardona test-fire the murder weapon in Mermelstein's garage and bullets that matched the murder weapon were later extracted from the garage wall by FBI forensics. Mermelstein also knew the defendant Vélez. He testified that Vélez was present when he was given the contract and that Vélez later asked Mermelstein to turn the contract over to him.