A fire suppression system comprising: a foam proportioning system that includes: at least two types of chemical foamants (36a, 36b), a selector valve for selecting one of the at least two types of chemical foamants (36a, 36b), a foam pump in fluid communication with the selector valve for supplying the selected chemical foamant (36a, 36b) to a discharge unit, a foam controller operatively connected to the foam pump and the selector valve; a water source connected to the foam proportioning system for mixing water with the selected chemical foamant (36a, 36b) to form a foamant mixture; and a water pump in fluid communication with the water source; wherein the fire suppression system further comprises: a compressor system including an air compressor and an air ratio control throttling valve, the compressor system being configured to inject compressed air into the foamant mixture for forming a predetermined compressed air fire suppression fluid composition; an engine; and a system controller operatively connected to the foam proportioning system, the water pump, the air compressor and the engine, the system controller including a one-touch activation control for (a) activating (i) the foam controller to configure the foam pump and the selector valve, (ii) the compressor system to configure the air ratio control throttling valve, and (iii) the water pump to provide a predetermined water flow, in order to establish the predetermined compressed air fire suppression fluid composition, and (b) causing a predetermined increase in engine speed resulting in an associated increase in water pump pressure. a foam proportioning system that includes: at least two types of chemical foamants (36a, 36b), a selector valve for selecting one of the at least two types of chemical foamants (36a, 36b), a foam pump in fluid communication with the selector valve for supplying the selected chemical foamant (36a, 36b) to a discharge unit, a foam controller operatively connected to the foam pump and the selector valve; at least two types of chemical foamants (36a, 36b), a selector valve for selecting one of the at least two types of chemical foamants (36a, 36b), a foam pump in fluid communication with the selector valve for supplying the selected chemical foamant (36a, 36b) to a discharge unit, a foam controller operatively connected to the foam pump and the selector valve; a water source connected to the foam proportioning system for mixing water with the selected chemical foamant (36a, 36b) to form a foamant mixture; and a water pump in fluid communication with the water source; wherein the fire suppression system further comprises: a compressor system including an air compressor and an air ratio control throttling valve, the compressor system being configured to inject compressed air into the foamant mixture for forming a predetermined compressed air fire suppression fluid composition; an engine; and a system controller operatively connected to the foam proportioning system, the water pump, the air compressor and the engine, the system controller including a one-touch activation control for (a) activating (i) the foam controller to configure the foam pump and the selector valve, (ii) the compressor system to configure the air ratio control throttling valve, and (iii) the water pump to provide a predetermined water flow, in order to establish the predetermined compressed air fire suppression fluid composition, and (b) causing a predetermined increase in engine speed resulting in an associated increase in water pump pressure. a compressor system including an air compressor and an air ratio control throttling valve, the compressor system being configured to inject compressed air into the foamant mixture for forming a predetermined compressed air fire suppression fluid composition; an engine; and a system controller operatively connected to the foam proportioning system, the water pump, the air compressor and the engine, the system controller including a one-touch activation control for (a) activating (i) the foam controller to configure the foam pump and the selector valve, (ii) the compressor system to configure the air ratio control throttling valve, and (iii) the water pump to provide a predetermined water flow, in order to establish the predetermined compressed air fire suppression fluid composition, and (b) causing a predetermined increase in engine speed resulting in an associated increase in water pump pressure.