Joshua Graham's armor

Joshua Graham's armor is a set of armor in the Fallout: New Vegas add-on Honest Hearts.

Background
The personal armor of Joshua Graham, the armor consists of a white collared shirt with rolled-up sleeves embroidered with Dead Horses tribal markings, heavily patched and stitched blue jeans with a hole in the left knee, a snakeskin belt with magazine pouches and a pre-War, Salt Lake City police department, SWAT ballistic vest.

Additionally, the armor has a sleeve garter on the strong/firing hand to ensure the sleeve doesn't distract the user. Completing the outfit are a pair of boots and a belt made from rattlesnake skin.

Characteristics
This set of armor provides the same level of protection as a suit of combat armor, at less than a third of the weight. It features the fourth highest DT in the light armor class, surpassed only by the Sierra Madre armor, Vault 34 security armor and Sierra Madre armor, reinforced, all three of which also weigh twice as much as Joshua Graham's armor. The DT/weight ratio of 15 to 8 is only surpassed by the all-purpose science suit with 13 to 2, as well as Ulysses' duster and the Courier's duster from Lonesome Road with 13 to 3.

Location
It is found in the footlocker that the player character appears in front of at the end of Honest Hearts, or it can be taken from Joshua Graham's corpse if he is killed.

Behind the scenes
SLCPD stands for "Salt Lake City Police Department" and SWAT is an acronym for special weapons and tactics. Joshua himself never mentions how he got his armor.