If you get handed a subpoena in open court:
“Your honor, I am a reporter employed by a [newspaper or television station] and have been subpoenaed to testify about information I obtained in that capacity. I believe that I am privileged from testifying about such information pursuant to NRS 49.275. Accordingly, I respectfully request a recess so I may contact my attorney, and so a motion may be made to quash this subpoena.”