question: I was researching agent orange and blood colts in legs and saw this...my husband was in Vietnam in 1967 and 1968....he is a retired mail man and walked for 35 yrs...retired and continued to walk at least 2 miles every day except sunday...In 2008 for no reason he developed a clot in his right leg from ankle to knee...went to his lung....all blood test for clotting factors were normal....did the 6 month thinner treatment then developed another clot in left leg from knee to groin...do you think this could be caused by agent orange