What is the test for insufficiency of evidence in criminal threat cases?

"When reviewing a claim of insufficiency of evidence, we must view the evidence in the light most favorable to the verdict and presume in support of the judgment the existence of every fact that the trier of fact could reasonably deduce from that evidence. The test is whether substantial evidence supports the conclusion of the trier of fact, not whether the evidence proves guilt beyond a reasonable doubt. We must determine whether a reasonable trier of fact could have found the prosecution sustained its burden of proof beyond a reasonable doubt of each essential element of the offense. Substantial evidence must be of ponderable legal significance, reasonable in nature, credible and of solid value." (People v. Briscoe (2001) 92 Cal.App.4th 568, 584-585.)

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In making our determination, we do not reweigh the evidence, resolve conflicts in the evidence, draw inferences contrary to the verdict, or reevaluate the credibility of the witnesses. (People v. Little (2004) 115 Cal.App.4th 766, 771.) Resolution of conflicting evidence and credibility issues is for the jury to decide. (People v. Martinez (2008) 158 Cal.App.4th 1324, 1331.)

The crime of criminal threat, as set forth in section 422, contains five elements: "(1) that the defendant 'willfully threaten[ed] to commit a crime which will result in death or great bodily injury to another person,' (2) that the defendant made the threat 'with the specific intent that the statement . . . is to be taken as a threat, even if there is no intent of actually carrying it out,' (3) that the threat-which may be 'made verbally, in writing, or by means of an electronic communication device'was 'on its face and under the circumstances in which it [was] made, . . . so unequivocal, unconditional, immediate, and specific as to convey to the person threatened, a gravity of purpose and an immediate prospect of execution of the threat,' (4) that the threat actually caused the person threatened 'to be in sustained fear for his or her own safety or for his or her immediate family's safety,' and (5) that the threatened person's fear was 'reasonabl[e]' under the circumstances." (People v. Toledo (2001) 26 Cal.4th 221, 227-228.)