I do not know if DNA exists for Jackie. He disappeared in 1944 and there was no physical evidence left behind which might have contained his DNA. The science of DNA matching was totally unknown and unimagined back then, so unless the family still had something of his, it is unlikely that DNA on him has been analyzed and is on file. That said, it might be possible for a relative of Jackie to donate their own DNA which would be similar to Jackie's. If he is not in namus, go ahead and enter him. Such a data base could help. Jackie has been missing for 74 years.