At some point in every WWII movie there is a dramatic scene where a soldier gets pinned down by gunfire, grabs his two-way radio and makes a plea for help before it’s too late. Although this may be a corny example, it does illustrate that two-way radio has been the first choice for instant communication by mission-critical organizations for quite some time.
Although military personnel have used radio communication ever since it was introduced back in the 1940's, Community Emergency Operations and thousands of businesses soon followed, making two-way radio the "go-to" choice for anyone seeking a robust communication system for over 60 years.
In fact, two-way radio is considered mission-critical for business and public safety officials, now more than ever. One reason is that two-way radio has high-operational efficiency in emergency situations, whereas other communication systems, like cell phone networks, often become overloaded leaving users unable to connect.
Another reason why two-way radio is so popular is that it provides the ability to easily connect instantly to one person for a private conversation, or to many people simultaneously for a group conversation without having to go through awkward set up commands and operations.