The Sniper - Gunman On A Roof
The police have posted lookouts on rooftops across the city. One of them spots a man on a roof.
Then ... The background view from this roof is of the Financial District.
... and Now, in the recent view below taken from the same rooftop looking down Montgomery Street, the Financial District has been completely rebuilt but a number of the foreground buildings, such as the white U.S. Appraisers Building at center right, still match up. The gunman was on the flat green roof of the house in the right foreground.
Then ... The cop sees that the man is carrying a rifle.
... and Now, the same rooftop, with an added roof patio ...
... Below, the rooftop is the one at 1065 Montgomery, on the corner of Vallejo (map).
Then ... The cop whistles (1950's communication technology?) to alert a fellow lookout.
... and Now, the Mark Hopkins Hotel on the horizon (above) is hidden behind the newer Fairmont Hotel Tower (below).
The cop gives chase, adeptly jumping down the cascading rooftops.
Then ... Coit Tower is in the left background and the Montgomery steps can be seen to the right - the same steps traversed earlier when the sniper stalked his first victim.
... and Now, the same view taken from the roof of 1177 Montgomery. (Trivia note - the red cone roofed house at top right was the home for many years of famed San Francisco attorney Melvin Belli, the 'King Of Torts').