A fire drill of ballistic rockets by Hwasong artillery units of the KPA Strategic Force is pictured in this undated photo released by KCNA in Pyongyang

A fire drill of ballistic rockets by Hwasong artillery units of the KPA Strategic Force is pictured in this undated photo released by KCNA in Pyongyang

A fire drill of ballistic rockets by Hwasong artillery units of the KPA Strategic Force. Photo: KCNA

April 19, 2017 2:24 PM (UTC+8)