Sarah Cahlan

• Visual Forensics

This Post video shows how Hamas fighters neutralized long-range cameras, sophisticated sensors and remote-control weapons.

• Visual Forensics

The hostages include nine children, according to an examination of hundreds of videos and images posted on social media since the fighting began.

• Visual Forensics

At least four Israelis taken hostage by Hamas on Saturday were killed soon after being taken captive, according to videos reviewed by The Washington Post.

• Europe

Aviation experts agreed that the available evidence thus far points away from a simple mechanical problem or human error.

• Visual Forensics

Hundreds of tents were rapidly built to house thousands at an abandoned military base. Whether it’s the mercenary group’s new home is an open question.

The Post reviewed body-camera videos, post-shooting interviews and dispatch audio for its investigation into the actions of officers that day.

• National

Many officers who responded to the Uvalde, Tex., shooting at Robb Elementary School remain on the job. Some who were fired still work in law enforcement.

• Visual Forensics

Footage from the aftermath of a fatal police shooting of a protester in January captures audio of gunshots and confusion among responding officers.

Previously unreleased video, audio and interviews for the first time show helicopter and ambulance delays after police finally confronted the Robb Elementary shooter.