Authorities say the suspect, Chenhan Jiang, was spotted on the roof of a four-story building with several Go-Pros attached to his body on Rogers Avenue around 11 a.m. Tuesday.
Initially, officers did not know what they were dealing with and approached the scene with lights, sirens and police K-9s.
Jiang was taken into custody without incident and the police say the firearm was determined to be a BB gun.
Police seized his BB gun collection.
Jiang is charged with reckless endangerment, menacing, criminal possession of a weapon, disorderly conduct and obstruction of government administration.
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