If someone knows what aircraft it is by all means tag it. Just keep it general enough that it can be used more than once, and don't make it too specific. So, if something is an A-10 tag it as such, don't specify A-10_(us_army) or something like that.

The real problem with guns was mainly that people were arguing the exact make and model with all its accessories and then wanted to tag things based off of that. That level of pedantic tagging helps nobody.