  Public safety operations require fast and reliable mission critical
communications under various scenarios, in which the availability of wireless
connectivity can be a question of life or death. To provide connectivity when
and where it counts, we have witnessed a growing demand for deployable networks
for public safety in natural disasters or emergency situations. This article
investigates the opportunities of using the 5th generation (5G) new radio (NR)
standard for designing flexible and reliable deployable networks. We describe
use cases and provide an overview of deployable 5G network concepts, including
architecture options, system performance analysis, and coexistence aspects. We
also identify technical challenges that can be considered in the evolution of
5G NR to unlock the full potential of deployable 5G networks.
