A giant American flag perched on a Boca Fire Services hook and ladder truck sat out front at Lynn University’s Wold theater. That’s how the city celebrated the official swearing-in of Jarad L. Phelps as the new police chief Thursday afternoon. Hard work,” Phelps said to his police force seated in the first two rows. David Ross, Highland Beach Police Chief Craig Hartmann, and FAU police were among the other officers there. So many people are moving to Boca because it’s a safe city, Thomson said.