What is the fine-grained topic of the following text: During a NUAIR-hosted,two-day conference in January, consisting of more than 40 UAS industry experts from 20 global companies, specific “real-world” scenarios were outlined and testing participating and non-participating UAS in the same airspace was one of those scenarios. Only return the topic.
Testing UAS (Unmanned Aircraft Systems) in shared airspace during a NUAIR conference