Again this personal experience only, but one of the projects I'm linked to is a greenfields Ada project. However, you'd be correct to say there are an awful lo

Again this personal experience only, but one of the projects I'm linked to is a greenfields Ada project. However, you'd be correct to say there are an awful lot of multi-decade projects in both the companies I mentioned(and the aerospace/defence in general). For example, last year my main project was work stemming from a design that began in 1997.