Myth Blaster: Red Shirt Friday

Diane S, Wisconsin wants to know if the email she received is legitimate concerning wearing red on Fridays …

Last week, while traveling to Chicago on business, I noticed a Marine sergeant traveling with a folded flag, but did not put two and two together. After we boarded the flight, I turned to the sergeant, … and inquired if he was heading home. “No,” he responded. …
Very soon, you will see a great many people wearing Red every Friday. …

The original version is at Snopes, who comments:

As with other schemes intended to create a demonstration of solidarity or support for a particular group through some type of visible display, there is not truth or falsity to be uncovered here.

In other words, it is just a doctored mundane example of something that is neither true or false; yet could be a good thing to advocate considering the cause.

Myth Blaster Verdict
Neither true or false, the added portion about the sergeant in Chicago is unverifiable, which makes it convenient for the story teller. Urban Legends wrote of wearing red shirts

In the spring of 2006, a “wear red on Fridays to show support for the troops” crusade began developing in Canada after Lisa Miller and Karen Boire, the wives of two Canadian servicemen, thought to adapt the 2005 American exhortation quoted above to Canadians serving overseas and post the revamped suggestion to their web site, Their “Red Fridays” movement has been widely publicized and has proved to be very popular among military and non-military families alike. … Red, by the way, is a color very strongly associated with all things Canadian, which possibly accounts for part of the reason for the program’s being embraced so enthusiastically by the U.S.’s northern neighbor. … 29 September 2006