The fire strike may affect airports.
Bigger airports where passenger aircraft fly into are all given a fire category depending, as already stated, on the type of fire equipment and personnel on the field.
For instance the airport where I work is category 8 ( 9 being the highest). This cat 8 means that aircraft with overall length of 49m up to but not including 61m and maximum fuselage width of 7 m can use the airport. Thats not to say larger aircraft cant use it, and indeed the cat can be upgraded to cat 9 when required.
As far as Im aware these categorys are based on outside services being available to attend bigger/more serious inccidences, and all airports have standing aggreements with local fire/police and ambulance services. Every time a full emergency or aircraft accident is innitiated the outside services automatically respond, no matter if the emergency is on for a B767 or for a C152.
Lets just hope this strike isn't going to last too long!