This is a blue 58mm Classic SD with United States Navy seal printed on the front, and the inscription “Chief of Naval Operations Director of Naval Intelligence”.
The Director of Naval Intelligence is the head of the United States Office of Naval Intelligence (ONI).
external links: SAK Wiki ONI (Wikipedia)
This is a 58mm Companion (basically a Classic with smooth alox scales). It has an image of a Lockheed P-3 Orion aircraft which is used by the United States Navy.
As you can see the scissors have the adjustable screw pivot. Victorinox stopped using those in 1991 (they use rivets since then), so this knife is at least 25 years old!
external links: SAK Wiki P-3 Orion (Wikipedia)
This is a blue 91mm Spartan with a metal inlay seal of the United States Department of the Navy on the front.
external links: SAK Wiki
This is a blue 91mm Spartan with the official seal of the United States Department of the Navy printed on the front.
The seal of the United States Department of the Navy
external links: SAK Wiki
This is a blue 58mm Classic SD with United States Navy seal printed on the front, and the inscription “Chief of Naval Operations”.
Because the US Navy print is on the front side, the Victorinox shield is moved to the back:
external links: SAK Wiki Wikipedia (CNO)
This is a blue 58mm Classic SD with United States Navy seal on the front, instead of the Victorinox Shield.
external links: SAK Wiki