Private Kowalski

 is an NCR Private living in Boulder City in 2281.

Background
His brother, Donald Kowalski, died at the battle of Hoover Dam.

Other interactions
Note that 'desecrating' (shooting or otherwise harming) the memorial will make a speech prompt and, depending on your selection, may make him become hostile. Killing him will give NCR infamy or cause others to attack you (the latter not confirmed).

Appearances
appears in Fallout: New Vegas.