Welcome aboard! The RR database can be a good tool once you explore it a bit. It's usually best to look things up there prior to posting a question. People here are great about answering questions. However, if an answer is in the database already then posting a question will not always result in an answer. When you are new, it is understandable to not understand the database first. The NIFC system is a new concept, initial attack vs. extended attack, air to ground vs. air to air, AM vs. FM frequency use, burning out vs. backfire and a lot of other concepts are not written down in the database. For these types of topics try clicking onto the RR Wiki from wherever you are in the database. You might find some well written articles that explain further.
Again, welcome. Glad to have you here.