attacks. alex, what are you seeing on the ground as this is the third night in a row this has happened? is there a sense of what kind of weaponry russia is using here? >> reporter: this was a city already on edge after two nights of extraordinarily ferocious attacks by russia. this city wondering whether it would happen for a third night in a row. that answer coming just before 2:00 a.m. with an attack that lasted around 1:45. arguably the most intense with the weaponry we saw on display tonight. it did start the same way the last two nights have, with air raid sirens warning the citizens that an attack was coming. we started to see the red tracer rournlds from the air defenses, firing up into the sky. lighting up the night sky. looking for drones to take down. we saw interceptor rockets