Dear LFTP: getting a blind stranger's attention, plus a cane story

• What is the best way to gain the attention of a stranger who is blind?

A listener asks how to get a blind stranger's attention after tapping his shoulder startled him; the hosts debate firm-bicep grab vs repeated 'excuse me, sir' from in front, then read the National Federation of the Blind guidance: repeat 'excuse me, sir' and identify yourself from a short distance, preferably directly in front. A host closes with a story of watching two blind women sword-fight and kick away each other's canes at a stoplight, laughing until they flipped him off.