BOSTON — Sirens screamed, tires screeched, and blue lights lit up the streets Saturday as Boston was slammed with back-to-back gun terror — a daylight drive-by shooting followed just hours later by a gun-toting dirt bike rider tearing through a city park.

The blood-chilling doubleheader started on Bowdoin Street, where shots rang out in broad daylight. A gunman leaned out of a moving car and opened fire, spraying bullets across the block. The intended target bolted for cover and somehow walked away unharmed, but panic ripped through the neighborhood as cruisers came flying in from every direction.

Police boxed in the getaway car in a high-stakes chase, cornering the suspect and dragging him out at gunpoint. A firearm was ripped from the vehicle — proof Boston had dodged another midday massacre by inches.

But before the city could catch its breath, chaos detonated again. Just hours later in Harambee Park, a dirt bike rider was spotted waving a gun as he revved his engine across the grass. Families scattered, children screamed, and another police flood poured in. Officers swarmed the park, took the rider to the ground, and hauled away both the weapon and the bike in a dramatic takedown that left the park swarming with flashing lights and stunned onlookers.

Two unconnected armed busts in one afternoon painted the same picture: a city spiraling under Wu’s watch. Her polished “safest city” mantra evaporated in the smoke of gunfire and the roar of police engines as Boston turned into a rolling crime scene, hour after hour.