Firefighting Helicopter Insurance
Helicopters need insurance much like a car needs insurance, but finding the right insurer for a firefighting helicopter is a little tricky. You want to be sure that putting your helicopter into high risk situations is covered by your specific insurance plan, otherwise it does you very little good. There are several companies that offer helicopter insurance and especially cater to emergency vehicles, so you may want to check them out first before going to the commercial class insurance companies.
Wings
Wings Insurance has some great insurance for helicopters and they work well with helicopters that are used as fire rescue and firefighting purposes. This website will help you understand a little bit about the company and get more information about their insurance. People looking for personalized insurance for a helicopter should check here first as they will probably be the best bet for price and service.
USAIG
USAIG is another great insurance company for helicopter operators and has an online application that you can look at, download, fill out, and send in if you want to get insurance through them. They claim to be the nation's leader in Aviation insurance. They handle a large number of accounts on a variety of aircraft, but they do not have a specified specialization, but they are a group of insurance companies that work as a unit and are underwritten by USAU, which settles the accounts of the USAIG. The two entities are so closely related that many times the names are interchanged.
CS&A
CS&A also offers some of the best insurance for aircraft. If you look on their website, you will find several helpful articles, newsletters, and a large jumble information designed to help you decide on insurance. However, you will have to be able to navigate through their site. They do offer to give you a quote, which is unique out of all the sites. Once you get a quote from them, check it with the quotes from the other two insurance groups and see how it compares. If it is cheaper, then it would be safe to go with it.
Any of these three are trusted, tested, reliable companies that will do well by you. Finding which one to go with will be a headache, though. You may want to just choose one and go with it, unless you need to have the very cheapest, or if you have quite a few aircraft that you want to insure.