When I saw the current website of your company honestly speaking being and UI/UX professional it gave me the impact that your organisation is really adding value to NATO countries security and if given a new look then the impact will be of a corporate giant !
While churning the thoughts for putting the UX of this website I considered parameters like current customers, your services and simulators and products associated with it which you are offering.
I got convinced that the minimal design will be the best suite for this type of business and buyers persona.
Moreover I have considered the navigation flow as centre point as most of the decision makers from your customer side will be above a certain age and they need a clean and intuitive flow which will trigger their mind to incline towards your services and products to make decision faster.
I have placed a CTA ( call to action ) button which will invite user to click it physiologically and fill the inquiry form.