Three of the 5 service academies (Navy, Coast Guard and Merchant Marine) have strict color vision standards. As an Academy Admission Partner I have had several applicants to USCGA fail the color vision test but were unaware they were color deficient prior to the test. I myself was unaware of my own green color deficiency until I was washed-out of pilot selection testing in college AFROTC. About 15 percent of males (some estimates say 1 out of 12 males) have some degree of color perception deficiency and I suspect, like me, most are unaware of their deficiency. Each year it seems we have cadets report to the Academy for Swab Summer only to loose a couple to failed Academy color testing (Obje might have some actual numbers on this). If you are applying to USCGA I would recommend you take a couple of the on-line color perception tests to see if this might be an issue for you: http://www.opticien-lentilles.com/daltonien_beta/new_test_daltonien.php And a new style test at: http://www.xrite.com/custom_page.aspx?PageID=77 My understanding is that West Point and Air Force do not have as strict a color perception vision requirement.