The Angel can be physical & in pure energy form depending upon the situation. www.angelencounters.net, www.angelfocus.com/encounters.htm, www.newadvent.org/cathen/01476d.htm,
www.mt.net/~watcher/ufos.html, http://inexplicata.blogspot.com/2012/05/magic-in-age-of-crusades.html
When a person claims to have seen such things, its difficult to prove.
www.dailymail.co.uk/news/article-2168337/Lillie-Leonardi-Former-FBI-employee-saw-angels-guarding-Flight-93-site-deadly-crash-9-11.html
However, such observations & encounters are also difficult to disprove.
www.huffingtonpost.com/2012/07/03/exfbi-employee-claims-she-saw-angels-flight-93_n_1646539.html
Angels & Demons are considered to be from another dimension or realm of the universe.
The Demon is from the dark side of the spectrum of consciousness & energy. http://bible.org/seriespage/survey-bible-doctrine-angels-satan-demons,
www.deliriumsrealm.com/demons, http://demons.monstrous.com/angels_and_demons.htm, www.trueghosttales.com/demons, www.alienresistance.org/angels_and_aliens.htm,
www.ufodigest.com/categories/angels-and-demons, www.thetruthbehindthescenes.org/aliens-and-demons
Beings from other worlds are considered to be alien to this world.
www.theforbiddenknowledge.com/hardtruth/rebel_angels.htm, www.thewatcherfiles.com/sherry/who-is-what.html
www.christianmedia.us/devil-face.html,
www.unexplained-mysteries.com/forum/index.php?showtopic=139202,
www.youtube.com/user/WOLVOMAN80, DVI & MK, etc.
www.bibliotecapleyades.net/sociopolitica/newworldorderscam/newworldorderscam09.htm
Steve-Quayle: GIANTS www.youtube.com,
www.prometheusnews.net/movie/dark-angels, www.prometheusforum.net/discussion/1575/ridley-scott-engineers-they-are-dark-angels/p1, www.prometheusnews.net/movie/book-hints-at-extra-scenes, http://desertshapes.blogspot.ca/2012/06/engineers-manipulators-of-worlds.html
The concept of prophecy has been around for quite a while.
