nice again!

how did you get those two hornets flying in formation? double flightplans? 

Great to see Willow Grove...

there sure is, if you check the readme for the AFCAD you will see a section for Parking Assignments for AI Aircraft.

FS uses the following criteria to decide where to park an AI aircraft.  These criteria are in order from most important to least important:

1. Parking Codes   (KLM, AAL, etc.)
2. Parking Types   (Gate, Ramp, Cargo, etc.)
3. Parking Areas   ( Parking, Gate 1, Gate A 1)
4. Parking Radius   (31m, 38m, etc.)
5. Parking List order  (first, second, third parking spots listed etc).

What you do is put these in each section of your planecfg's.

atc_parking_types=Mil Cargo or Mil Combat and then  you can specify it even more by adding
atc_parking_codes=

http://afcad.projectai.com/documents/mil/militaryparking.htm

this gives you a really good break down of what you can add.

From the PAI website they have 3 help links. One of them allows you to add a HUGE list of military parking codes to your default ones.
Go here and download the new parking specs txt file and over write the one in your afcad folder

http://afcad.projectai.com/faq.html

So in my C-130 AC.cfg I add the following lines for each skin that I have in my AI plane folder.

atc_parking_types=Mil Cargo
atc_parking_codes=C130,M003

You can even assign wings if you have different planes of the same plane 8)

and...where did you find that Hornets (freeware)? and did you use the C-1 in your flightplans? i found that plane, but i think it's not used in the flightplans...