Is it just me, or did you hear a helicopter at the end of The Walking Dead?

After the last crash of the CDC exploding and just before the first strains of Bob Dylan, you get about 10 seconds of noise.



There are 2 sounds there. One is the crackling fire of the CDC burning. The second is, unmistakably, the sound of helicopter rotors. Anyone else hear that? Go back and listen to it again.Is it just me, or did you hear a helicopter at the end of The Walking Dead?
Oh yeah you can deffintly hear it, I guess that's another pice of suspence, showing that there's something out there, mabey there is military somewhere?