Buffalo Office - 3 photos requested, why did they return 2 photos back?

[alisa]

When I went to pick up my PR visa, I was requested to bring 3 recent photos. They returned 2 photos to me in the envelope that they put my landing document. I didn't ask them as I was thinking I might need to use those photo when landing. I landed yesterday but I didn't need to use any photo and when I asked the officer, she didn't know.

Does anyone know what are those 2 photos for?

 

[grettta]

No clue. Same thing happened to us and we wondered the exact same thing.