Good day!
Some days ago I participated in scripted calls - missions like fire in prison or terrorists planted a bomb in a hotel. After that, I had an idea about officers also. I think that there should be missions for all departments, like if there is a bomb in International Airport, then all departments should be involved, it could be more than 30 seconds for bomb defuse... I'm not talking about bombs, mission script is made very well, you can RP what want on it when a timer goes.
Conclusion: Missions / merged calls for all departments where all should be involved, if there are not enough departments mission don't appear.
This could make all departments work together and also more fun for players all could be involved.
P.s. Only logic answers required, hate can be left for yourself, without posting it.
Thanks.