DEEP SPACE NINE: "Homefront" - 11/04/95 - ACT FOUR 42. 40 CONTINUED: JAKE (playing peacemaker) Grandpa, look, I'll take the test first. (to the Security Officer) Go ahead. The Security Officer looks to Sisko, who nods. He then uses a hypospray to take a blood sample from Jake (as in "The Adversary"). He removes the vial and sets it on a table. The contents remain red. Sisko steps up to the officer. SISKO Now me. HEAD OFFICER Sir, that's not necessary. SISKO Do it anyway. Sisko is tested as well. His blood also stays red. SISKO (to Joseph) Your turn. But Joseph's not budging. JOSEPH Jake, do you think I'm a Shape-shifter? JAKE Come on, grandpa. JOSEPH Answer the question. JAKE No, I don't think you're a Shape-shifter. JOSEPH At least someone in my family has some sense. SISKO Dad...