Search and Mark

 is a perk in Fallout: New Vegas given to you while you have Rex as a companion.

This perk highlights food, chems, firearms, and ammunition within a short distance in a green outline while aiming down sights.

Containers (i.e. refrigerator,metal box, etc) that have one or more of these items inside will also be highlighted. Once the items are removed, the container will no longer be highlighted.

The perk will also highlight unopened Hollowed out rocks containing the appropriate items.

Bugs

 * Some killed creatures such as Lakelurks will be highlighted despite their bodies not containing anything the player can pick up. In the case of Lakelurks this may be due to the Lakelurk Shriek "weapon" they carry, which is classified as a real weapon with ammo but cannot be obtained by the player.