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the fda has just authorized the first updated booster vaccine targeting the omicron variant. americans could get the new shots as soon as friday. welcome to our viewers in the united states and around the world. wolf blitzer is off today. i'm pamela brown, and you're in "the situation room." >> let's get straight to the latest developments in the mar-a-lago investigation. the trump legal team under deadline to respond to last night's explosive new filing from prosecutors. i'm told by a source familiar that they are expected to meet that deadline. i want to bring in our senior justice...

Cipher Brief Expert and former senior CIA Officer Mark Davidson offers insights on what to read and watch this summer.

In Chalk Marks, Cipher Brief Expert and former senior CIA Officer Mark Davidson tells us why The Sympathizer is a must read espionage novel.

Or using photographs to make measurements. >> brunn's experts needed a map of the accident scene with the skid marks to conduct their investigation. kayfetz's job was to reproduce the mark on the road in the exact position so a surveyor could map its location. he began by making a 35-milimeter negative of schneider's photograph showing the skid mark. >> i put it into a special camera that i take back to the scene. i locate the exact point from which he took his photograph, and looking through my camera, i can re-mark the position of the skid mark on the ground and have a surveyor record it. >>...

Measurements. >> brunn's experts needed a map of the accident scene with the skid marks to conduct their investigation. kayfetz's job was to reproduce the mark on the road in the exact position so a surveyor could map its location. he began by making a 35-milimeter negative of schneider's photograph showing the skid mark. >> i put it into a special camera that i take back to the scene. i locate the exact point from which he took his photograph, and looking through my camera, i can re-mark the position of the skid mark on the ground and have a surveyor record it. >> the chalk marks helped kayfe...