You should pay attention to the website he gave as his source - a website run by the Heritage Foundation known for having a strong conservative bias. I found so

You should pay attention to the website he gave as his source - a website run by the Heritage Foundation known for having a strong conservative bias. I found some criticisms to the study in the comments of a blog: 1. Authors show a graph showing the median income of the family of recruits is $48,616 then proceed to define any family making more than that as "affluent". 2. Authors didn't have income data of the recruits and their families so they based their study on what neighbourhoods the recruits came from using zip codes (!) and whether the neighbourhoods were considered low-income, high-income, etc. Source: http://turcopolier.typepad.com/sic_semper_tyrannis/2009/04/who-serves-in-the-us-military-heritage-foundation.html?cid=6a00d8341c72e153ef01156f5e560d970c http://turcopolier.typepad.com/sic_semper_tyrannis/2009/04/w...