http://www.walterpoirier.com/
There is a decent and pretty informative article about him here
http://magazine.nd.edu/news/10516-into-thin-air
On assignment with the Peace Corps in Bolivia, Walter Poirier ‘00 mysteriously vanished, leaving no clues, a pall of unanswered questions and a wide circle of loved ones who cannot believe he’s gone.
Word spread the way it always did.
Haphazardly. In fits and starts. A phone call here. Bump into someone there. Have you heard? Anyone call you yet? The news getting out the way it always had when they were all living together in Zahm Hall. Smitty calling Cheez. Or Papa getting in touch with Downsy. Someone tracking down Uno. An imperfect, inefficient fanning of information until everyone who used to live in that old hallway knew. Until they were all back in touch. Just like before. The whole O-Row. You got the word, right?