i've looked myself after reading your post and it looks like you'll have to make it yourself. BUT it might not be that hard. here's a link with designs that you could look to research how to build your design:
Our Newest Fire and EMS Decals from Rescuetees - ALWAYS Something New!
there are plenty of free vectors of shields that you'd probably use as the basis of the design. then incorporate the text of the city/department etc. around or within that shield and add other rescue related tools (ladders/hatchets/helmets) and you should be ok.
or this could be a mine rescue vector (i think): 'the walking in the dark image'
http://all-free-download.com/free-vector/helmet-image.html
Our Newest Fire and EMS Decals from Rescuetees - ALWAYS Something New!
there are plenty of free vectors of shields that you'd probably use as the basis of the design. then incorporate the text of the city/department etc. around or within that shield and add other rescue related tools (ladders/hatchets/helmets) and you should be ok.
or this could be a mine rescue vector (i think): 'the walking in the dark image'
http://all-free-download.com/free-vector/helmet-image.html