Did your church have a data backup plan? Hardware failures, data corruption, or malware can all destroy valuable files. Regardless of what OS or browsers you're using, you must take the time to formulate a plan. Best to make it an automated process, so don't even have to think about it.
I'm using all open source, freely available apps to backup my systems. With data files and photos automatically backed up twice per day. Key files are backed up when any changes are detected.