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FreeBSD 10 has been released. You can read the release notes, and, of course, go ahead and install it.
Try using the bwn driver - the man page lists the AirForce card as supported by it. It's mostly the same as bwi, but designed for newer cards that have larger firmwares.
And, the firmware isn't included for this card. To get it, you need to install the correct port from the ports tree - ports/net/bwn-firmware-kmod
Which means, net access for the ports tree. If you have the ports tree installed and can easily enough move files from another machine to the FreeBSD setup, you can go into /usr/ports/net/bwn-formware-kmod and run make fetch-recursive-list >> filename to generate a shell script which will automatically pull the necessary files and dependencies for building. Stick them in /usr/ports/distfiles and run make from /usr/ports/net/bwn-firmware-kmod
I'm guessing there is a licensing issue for the firmware - other wireless drivers with binary blobs are available out of the box in FreeBSD, including the very-well-supported Atheros chips.