those are air raid sirens and they re near constant in kyiv. overnight explosions in that capital city. missiles, mortars, tanks and russian troops shattering the uneasy relative calm of the past few months. the initial wave of attacks appear to be coming from all different directions. and so far, it remains unclear if ukrainian forces have actually been able to mount any sort of effective resistance. in ukraine s second largest city, the subway terminal is now serving as a bomb shelter. cnn s clarissa ward was there earlier today. we re talking hundreds of people spread out throughout this entire subway station.
threatened police online. and tonight mayor de blasio and commission bratton released new video of the shooter. it shows him walking around a subway terminal in brooklyn. he s carrying a bag. officials think the gun was inside. but after this moment around noon, police do not know where he goes for more than two hours. here s what we know. around 5:30 saturday morning, he showed up at his ex-girlfriend s apartment in maryland, near baltimore. he shot her. right now she s in critical condition. but she s stable. he then took a bus from baltimore to new york, around 2:45, brinsley shot and killed two police officers. joining me now is dr. cedric alexander, the president of the national organization of black law enforcement executives. thank you for being here. thank you for having me.