An elderly North Carolina gentleman, Joseph Sapienza, heard two robbers trying to pry open his door. He put his gun in the holster on his walker, moseyed to the front door, threw it open, and yelled out that he was armed. The two robbers fled. (Story.)
The sheer awesomeness of having a holster on a walker aside, this serves as a reminder that the Second Amendment protects the elderly, the weak, and the frail far more than it protects big burly men (who are protected by the fact that they are big, burly men). As the saying goes, God made young men and old men, but Smith & Wesson made them equal.