u.s. flag at graves in arlington national cemetery. >> posting on facebook, humans have their limit but the old guard has yet to meet theirs. strong words. because when it is not memorial, in february when it's cold, in kawg wheaugust when it's hot, td guard is doing it 24/7 around the clock. anytime i have relatives and friends come to d.c., they are like i want to go hear and there, let me take you to the tomb of the unknown soldier. >> i also want to say we devote a weekend to this every year where we honor the heroes but that's something we should do all year long. they fight so hard for the freedom that we don't always