Note: The cache is NOT hidden at the posted coordinates. Bring your own pen. And give it a try without reading the hint first...but, if you do solve it without the hint, make sure to read the hint later, 'cause it'll be fun! (After solving it, drop me an e-mail letting me know which of the secret elements of this cache you noticed!) 
In the X-Files television series, one of the primary motivations of the lead male character, an FBI agent named Fox Mulder, was to solve the childhood alien abduction of his sister. Along with his partner Dana Scully and his Bureau chief, Walter Skinner, he worked to solve not only alien abduction cases but MANY other cases of the paranormal.
Given what I recently learned about aliens in the real world, we desperately need the skills of such talented agents, and since Miami has geocachers named Mulder, Scully, and Skinner, I'm hoping that this town will breed MANY people who can help this planet toward salvation.
Apparently, there have been aliens monitoring Miami for years, and it appears that the aliens have turned hostile. I have learned of four locations at which alien abductions are either planned or have already been executed, but the biggest danger comes from the fifth location, and I'm afraid if we don't locate it soon and make some sort of good-will gesture to the aliens, something drastic may occur.
We need to let these aliens know that we want to peacefully coexist with them. Aliens and humans all need to feel safe! So, please, locate the fifth site and sign the "Peace Log". If enough humans show that we are willing to work to solve this crisis and sign the "Peace Log", perhaps the aliens will reach out to us with more than a ray gun.
Congratulations to MulderN'Scully for FTF!
You can check your answers for this puzzle on Geochecker.com.