Tag Archives: Guest Speaker

Welcoming our Guest Speaker: Crystal Onyema, UAT National Admissions Representative

The Center for Computer Studies is pleased to welcome Ms. Crystal Onyema from the University of Advancing Technology today!

She will be speaking to our Magnet students about college and career opportunities in the fields of Design, Multimedia, Software Development and CyberSecurity. Magnet students are welcome to come see her presentation during any class period from 3rd hour to 8th hour.

If you wish to attend during 4th hour Advisory, please get signed out in advance, and travel during the normal Travel Time.

Posted: February 25th, 2020

Guest Instructor: Mr. Brewster Rolland-Keith

Please welcome Mr. Brewster Rolland-Keith, Carl Hayden’s newest Computer Lab Assistant! 

Mr. Rolland-Keith worked at a federal agency as an Audio Video Forensic Analyst prior to working here at Carl Hayden.  He has performed forensic work on felony cases, as well as testified in court and instructed other expert witnesses in the field.  He has a bachelors degree in Film from the University of Arizona.

In today’s class, you will clarify images by learning forensic terminology and processes using Adobe Photoshop.  This will be measured by your ability to identify details of a subject so that you can better understand how and why video forensic experts perform their duties to help prove truth in cases.


  • Use Digital Video Forensics and Adobe Photoshop to identify details of a subject.

Student Friendly Objectives:

  • I can clarify images in Adobe Photoshop using Digital Video Forensic techniques.

Required Files:

Topics Discussed:

  • Adobe Photoshop CC
  • Digital Video Forensics


  1. Download the Required Files above, and follow along with Mr. Rolland-Keith’s in-class demonstration.

Assigned: May 13th, 2019
Due Date: May 13th, 2019