Page 22 - Back Wall News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Like if you're, say, don mcgahn going to one of these interviews. what is that like? >> it's a long and difficult day for the people that go to that office. the special counsel set up shop at an anonymous building in southwest washington. it's a different building than the headquarters of the department of justice. witnesses come in through a loading dock area and then ushered into a garage so they can go in without being spotted by the press or public. and then they sit in a window conference room while groups of fbi agents, two or three at a time cycle in and out of the room asking questions...

>> get on the ground! >> get on the ground! >> get on the ground now! >> i want them out. put your hands on the back wall. let's go! >> come on down here and have a seat. i want you to sit down, take your hands off your head. gentlemen, those of you sitting on the floor, there will be no talking. >> open 17. >> you, have a seat right there facing the glass. >> when we came in what we did was fired a bored thunder. basically it's a flash bang and a shotgun round. that's to get their attention and to get them to understand we mean business when we come through the door. it's called a dynamic ent...

>> get on the ground! >> get on the ground! >> get on the ground now! >> i want them out. put your hands on the back wall. let's go! >> come on down here and have a seat. i want you to sit down, take your hands off your head. gentlemen, those of you sitting on the floor, there will be no talking. >> open 17. >> you, have a seat right there facing the glass. >> when we came in what we did was fired a bored thunder. basically it's a flash bang and a shotgun round. that's to get their attention and to get them to understand we mean business when we come through the door. it's called a dynamic ent...

>> get on the ground! >> get on the ground! >> get on the ground now! >> i want them out. put your hands on the back wall. let's go! >> come on down here and have a seat. i want you to sit down, take your hands off your head. gentlemen, those of you sitting on the floor, there will be no talking. >> open 17. >> you, have a seat right there facing the glass. >> when we came in what we did was fired a bored thunder. basically it's a flash bang and a shotgun round. that's to get their attention and to get them to understand we mean business when we come through the door. it's called a dynamic ent...

>> from his study of art history, allen knew that medieval artists already used an optical device called a camera obscura. >> camera obscura work exactly like a human eye. what we have here is a box that is sealed. no light can enter into it except through this hole. like a human eye, there is a lens. whatever is outside this box is focused through this lens and forms an image on the back wall of the camera and it's inverted. in other words, it upside down. >> the lens at the front of the camera ensures a sharp image is projected on the back wall. >> we know for a fact that this is very ancien...