Lufthansa is on their 8th strike in 2014. If you are affected this is how it looks like:
An email arrives that the final leg of flight got cancelled 24 hours before departure. Logging in to the website suggests to get a train ticket. Trying to do so results in a generic failure. Phone lines are not being answered by Lufthansa in Germany or the US. At 6am there is another email informs you that the outbound flight is also cancelled. Phone lines still don't work. The web interface says to contact phone numbers that have not been answered in the last 20 hours. The phone numbers tell you to check the web.