Welcome screen:

On this screen, i applied visual hierarchy to the design as this was one of the problems the initial interface had. Here we have two buttons, one signifying emergency which is real alert warning, and the other signifying testing which is only a drill, no real emergency. The use of colors can help the user understand at first glance what each button is used for.

Screen 1:

From the first screen, if you pick on the emergency button, it takes you to a dashboard where you can send strictly emergency alerts. this dashboard is not for drill alerts.

Screen 2:

From here, this is where all the emergency check were put in place. One major problem the former interface had was lack of security check and lack of feedback. I solved this problem by ensuring when a user clicks on any alert he wants to send, a modal pop-up comes up where he has to type the "Action" he wants to undertake to be sure he is aware of his actions. Also, there is an avenue for recoverability in the case of error and this has been visually displayed by the GO BACK button

Screen 3:

On this screen, whatever action the user picks takes sometime (9 seconds) to load, and this gives an opportunity for the user to recover from action by clicking the cancel button. So in the case of the user performing all passed actions in error, which is most likely not to be so, all hope would not be lost as the user can quickly get back on track and recover from such an error

Screen 4: 

This screen has a pop up that lasts for just 3 seconds signifying to the user that his actions has been completed successfully.

Screen 5:

Here, the test button is clicked and emergency button is inactive. So every action here is a drill.

Screen 6:

same principles and procedures as screen 2, only this one is a drill

Screen 7:

same principles and procedures as screen 3, only this one is a drill

Screen 8:

same principles and procedures as screen 4, only this one is a drill.

In designing this interface, i took note of the key problems the initial interface had and then made the experience much better. firstly, the initial interface used  no visual Hierarchy nor recoverability, but in my redesign, i took steps to make sure user can recover in the case of an error before the final implementation of action takes place.

 I also used colors to guide the users instinct in carrying out different actions within  the application interface.

The userflow was well planned and application interface gives feedback to the user who is using the application.

Finally, i used a minimal design approach and made sure learning curve was flexible for just about anybody to learn how to use the interface.