There is also a Season 7 episode titled The Birthday (1987). It revolves around Krystina's third birthday.
Sole series appearance for veteran and versatile character actor Gregory Walcott as the marksman training Kirby to fire a handgun. Walcott is perhaps best remembered for starring in the infamous Plan 9 from Outer Space (1957), the acclaimed police drama 87th Precinct (1961), and in four 1970's Clint Eastwood films.