Sons In Retirement
Sons In Retirement (SIR) is a fraternal organization of retired men. It has about 150 branches and 20,000 members  in Northern California and Central California. SIR was founded in San Mateo, California in 1958  and subsequently incorporated as a non-profit public-benefit corporation. The organization's purpose is:
'To provide for the welfare of retired men... who are pursuing a common goal, the enjoyment of their later years with dignity and pride... through association with other retired men who also face the particular problems that confront men upon their retirement.' 
SIR Manual 11/9/2010
- , SIR Mission].