Appellant was convicted in a bench trial in the Circuit Court for Baltimore County of three counts of robbery with a deadly weapon, three counts of robbery, three counts of second-degree assault, three counts of theft under $1,000, three counts of first-degree assault, and three counts of unlawful use of a firearm in the commission of a crime of violence. Appellant presents five questions for our review, which we have rephrased slightly as follows:
1. Did the waiver of jury trial comply with the requirements of Maryland Rule 4-246(b)?
2. Did the charges in the indictment of unlawful use of a firearm in the commission of a crime of violence fail to charge a cognizable crime?
3. Did the trial court err in admitting prejudicial hearsay?
4. Did the trial court err in admitting the in-court identification of appellant?
5. Did the trial court abuse its discretion in denying appellant’s motion for mistrial?