"I found out that colonels can stay until they drop dead or get a walker and being a critical medical specialty as an Army trained emergency room doctor, I could stay until age 67"

Gerald Griffin's quote recommends that he has discovered that colonels in the Army can stay in their position up until they either pass away or become too old and frail to continue. As an Army qualified emergency room medical professional, Griffin has the chance to stay in his position up until he reaches the age of 67. This suggests that he is content with his existing position and is willing to remain in it for the foreseeable future. Griffin's quote also recommends that he is proud of his medical specialty and the fact that he is able to serve in the Army for such an extended period of time. It is likely that Griffin is expressing his appreciation for the Army and the chances it has provided him with.