This is just a quick note to myself so I don't forget. If you're looking on how to reduce the boot countdown time on FreeBSD 9 and 10 this is how you do it:

Edit /boot/defaults/loader.conf

Find the line:

#autoboot_delay="10"

Uncomment and change it to a much lower number, for example:

autoboot_delay="2"

Upon reboot the timeout will only be two seconds. In case it's not clear what screen I'm talking about, take a look: