Are you aware of any free/low cost graduate level online courses on GEOINT/SIGINT ?
Hi Jayeeta Chakraborty,
Check out the following Free training to start :
Mapping and Visualistaion - this will help convoy your message
Spatial Analysis
Shane
Hi Jayeeta, you may also want to check out the resources on this page, it's a mix of paid and free Esri training options relevant for the defense and intelligence communities: https://www.esri.com/training/geospatial-capabilities/ .