During some abduction events, abductees are missing from their normal environments.  Police have been called, search parties have been sent out, parents have frantically searched for their children, etc.  When people remember abductions, they sometimes return with marks on their bodies -- not just any marks, but with seemingly impossible, fully formed scars. They sometimes return with broken bones and have no idea how they were injured.  Sometimes they find unusual stains on their clothes that were not there before the abduction...Some people return with their clothes on backwards, and / or inside out.  They may return wearing someone else's clothes.  Abduction often occurs with other witnesses who can confirm details, as with Barney and Betty Hill.  Often it is with family members, but there are instances when friends or bystanders witness the abduction as well, but are not taken.  People are abducted while fully awake, driving a car, gardening, and so forth.   J. Scientific Exploration 20, 2, Summer 2006, p. 306.