That the pilot(s) have made an almost perfect pentagram, awacs off at precicely the right time (no continuation of trail at the end of each angle), can you see the trails continuing at the end of each angle?, no they stop to create the pentagram!
I think the major issue, is the fact that what you see as a pentagram has been ingraned to be a symbol of evil, mainly through pop culture.. allow me to provide you some background on what you see.
The Pentagram, in and of itself, is no more evil than the Cross, the Upside Down Cross, the Ankh or Christmas. What you see as a sign of evil and demonic influence, actually started out as a pagan symbol dating as far back as the Sumerians. It was later adopted by
Christianity to represent the 5 senses AND the 5 wounds of Christ (wreath of thorns, stake in each hand and through each foot), which was later known as the Stigmata (the signs of Christ's Crucifixion).
Here's a little more history you may find interesting.. Did you ever consider WHY Hitler chose the Swastika as the Symbol of the Third Reich? Its origins date back to Buddhism as a sign of everlasting life, or eternity.. not evil. Hitler chose the symbols he chose because of their meanings.. WE later interpreted them to mean something else. Now the Swastika represents depravity and murder.
Here's a few other things you may find interesting.. Two of the most celebrated holidays on the Christian Calendar are Easter and Christmas... both of which were originally Pagan holidays that were adopted by the Church to bring pagans into the fold. Lets look at Easter.. Did you ever wonder why chicks and rabbits were associated with the resurrection of Christ? They're signs of fertility and life... the Spring Solstice. Let's look at Christmas.. ever wonder why we have Yule Logs, or the 12 days of Christmas? Ever ask yourself what shepards were doing moving their herds in the middle of winter rather than getting them to better grazing BEFORE the cold of winter set in? Christmas is the winter solstice.. another pagan holiday adopted by the Church to help the transition of pagans to Christianity.
So, technically, if you want to say that things that are pagan in origin are evil (such as the pentagram) then youd have to declare that both Easter and Christmas are JUST as evil because of THEIR origins.
Now.. as far as the way the contrails cross one another... Odds are that if you can get to altitude, or change the angle you can SEE said contrails, your supposed 'intentional' pentagram, turns out not to be a pentagram what so ever.. just lines in the sky.. very similar to the way we see Constellations. Stars that we THINK are part of the groups we know as constellations are light years away from one another... not even in the same star group. Its all just a matter of perspective, literally.. the point that the images are seen from changes the way they look. If you take your pentagram and go a few hundred miles in another direction.. you wont see a pentagram, youll see a bunch of nondescript lines in the sky.
Finally.. ask yourself one LAST question. Why oh why would a group that wants to take over the world covertly, do such stupid and mundane things like painting pentagrams in the sky for the whole bloody world to see, when they DONT want us to know they exist? Not a very super secret organisation when they telegraph their existence. Why bother with contrails or smoke, when you can pick up a cell phone, or punch keys on a computer with 2 gig encryption algorithms? Occam's Razor dictates that the most simple solution (in most cases) is the correct solution. Which is more likely? The Illumiati/NWO are painting the skies with pentagrams for all the world to see.. or someone happened to be standing at the right place to take a pretty picture of something that LOOKS like a pentagram from their perspective?