Some of the most expensive fighters such as the US F-14 Tomcat, F-15 Eagle, F-22 Raptor and Russian Su-27 were employed as all-weather interceptors as well as air superiority fighter aircraft, while commonly developing air-to-ground roles late in their careers.
The health service measures that best predict subjective health status should be identifiable. Following her further degree in clinical epidemiology and biostatistics, her interest turned to the development of methods to measure subjective health status.
Subjective and Objective Metrics: Note too that metrics can be objective or subjective - and we should look for a balance of both. In my opinion, there is sometimes nothing better than a good, subjective anecdote or two to build senior executive confidence in its training function.