Half siblings definitely looks like a good possibility--the cousins look like cousins, the aunt looks like an aunt, and the suspected half sibling looks like a half sibling--all of those people came up in the range you'd expect to see.
Network President Jenny LeFevre, Agent Orange Victims and Widows Support Network, attributes more than 250,000 deaths to Agent Orange, a toxic herbicide the U.S. military sprayed over Vietnam from 1962 to 1971.
A U.S. Court of Appeals for Veterans ruling in 2005, which concluded that a veteran contracted a disease as a result of his exposure to Agent Orange while stationed on Guam in the late 1960s, is a confirmation that toxic herbicide agents had been used on Guam, Sen. Benjamin Cruz, D-Piti, said on Wednesday.