Q: Macbook Air keeps randomly shutting down. Sometimes 3-4 times in a row.

Hey tmacfarlane,

Welcome to the Apple Support Communities! I understand that you are experiencing issues with your MacBook Air unexpectedly restarting. This can sometimes indicate that an SMC reset could be necessary:

Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support

http://support.apple.com/en-us/HT201295

If the issue persists after resetting the SMC, you can check out this resource for additional information:

OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem." - Apple Support

http://support.apple.com/en-us/HT200553

Thanks,

Matt M.