Any good free flight base missions?

[dresoccer4]

I'm looking for a .miz that has a lot of objects placed and planes flying around to use as a base mission to build up my own missions. Anyone know of any missions like this? Things like bases and beachfront fortifications and patrol routes, etc. Hoping to not have to reinvent the wheel if something like this already exists. 

Thanks for any help!

[Art-J]

"Sandbox Afternnon" mission by Nealius might be a good start:

 

[dresoccer4]

1 hour ago, Art-J said:

"Sandbox Afternnon" mission by Nealius might be a good start:

 

thanks, will check it out