Article snippet: The Federal Emergency Management Agency said the state of Hawaii didn't need federal approval to retract a cellphone alert mistakenly sent over the weekend warning of a ballistic missile attack. Hawaii has had the authority to cancel or retract warnings since 2012, when it applied for access to the Integrated Public Alert and Warning System, FEMA said in a statement. Hawaii Emergency Management Agency spokesman Richard Rapoza said Tuesday his agency asked FEMA for clarification on Saturday about whether rescinding an alert was an appropriate use of the warning system. Hawaii officials have said the process was one factor that delayed their retraction. Another was writing the cancellation notice, since a retraction script was not kept on file. The Hawaii agency didn't send a retraction until 38 minutes after the initial alert. Rapoza said officials weren't clear on whether they could use the system to cancel the first alert. "We didn't want to pile one mistake on top of another," Rapoza said. Officials said a state employee clicked the wrong link and activated a real alert instead of an internal test when the mistaken message was distributed. Hawaii is the only state that is set up to send cellphone alerts about the threat of an incoming ballistic missile. It's had the ability to do so since November, Rapoza said. Hawaii is also the only state that has siren alerts that will be sounded specifically to warn of a ballistic missile threat. Hawaii started test... Link to the full article to read more