Not only Fleet Operations is being a time consuming and fun task for the team, but - as it is with nearly all things in life - it costs money. A donation helps to pay the cost for the community websites' server and the software tools for Fleet Operations' development. It gives us new options by allowing us to consider licensed resources. A donation can also pay for a motivational boost in form of a pizza that is going to be consumed by the developer team.
If you enjoy playing Fleet Operation, why not consider contributing to the future of the project?