Samuel Oakford

• Investigations

A disjointed communications system on the day of the rally hampered the Secret Service’s ability to grasp the threat in real time, a Post examination found.

• Visual Forensics

Thomas Matthew Crooks temporarily recoiled from his rooftop perch and did not shoot again before he was killed by a Secret Service countersniper.

• Visual Forensics

A new analysis of surveillance footage identified apparent lapses in the response by Central State clinical staff.

• National

A 3D analysis by The Washington Post found two countersniper teams likely had difficulty seeing the gunman before he fired.

• Elections

Some donors who attended the June 15 event at L.A.’s Peacock Theater said this week that they noticed Biden seemed slow. He seemed frail. As he greeted donors lined up for photos, he trailed off or spoke too quietly to be heard.

• Middle East

Many of those who died this month from extreme heat in Saudi Arabia were unregistered pilgrims without access to cooling facilities during the Hajj.

• National Security

Jason Gray is said to have shared NSA intelligence with followers of an antigovernment extremist movement.

• National Security

Teixeira, who had worked as a computer technician on a military base, is expected to spend less time in prison than if he had been found guilty at trial.

• Military

The drone that killed three U.S. troops in Jordan probably went undetected, and no air defense was on site capable of shooting it down, early assessment finds.