You must decide which clock timer will be receiving from BlueTooth, and
is in charge of analyzing the input. Move the Timer logic from the other clocks to the process procedure.
Here is some reading for you on procedures ...
http://www.appinventor.org/bookChapters/chapter21.pdf
from FAQ Section: Books, Tips, Tutorials for AI2
In that procedure, put some IF statements and text matching blocks to see if an emergency is mentioned in the message variable, and respond appropriately.
See the Making Decisions chapter if that book if you have trouble with that.