When you see the UPS uniform, there is a certain element of immediate trust.
Seeing the man who did try to rob him at gunpoint, Walter Harper will not forget his face.
The incident took place in the hallway of his apartment building.
Harper noticed and it was caught on security camera photos. The would be thief was wearing a United Parcel Service delivery jacket. And just twenty minutes earlier at another building, he got past a guard wearing the same jacket.
"The guard didn't realize because of the uniform and let him on in?and that's when he robbed somebody upstairs," said William Jones.
In the first attempted robbery the alleged robber entered a high rise apartment building at 101 west 147th street, pulls a gun on a victim but gets no money.
Just 20 minutes later just four blocks south at 159 west 143 street, he encounters Walter.
"I go like, are you crazy, and I pushed the door a little more open so that maybe people could hear me in the hallway," adds Walter.
Walter told him he has no money and the man runs off, but now police want to stop him and what they believe is his deceptive act as a deliveryman.
UPS officials say they are cooperating with police in their investigation and remind customers "UPS drivers all carry company issued identification...and wear the familiar brown uniforms and arrive in a branded UPS vehicle."
"I think he took the uniform from somebody because he didn't have a badge for his nametag or anything, but I never really notice their nametags. But the uniform looked really good on him," adds Walter.
Anyone with information is asked to call police.