Not a good fit for my family now

[army mommy of three]

Hello! I'm a new CNA, 38 years old, who has been out of the workforce for more than 16 years. All this time I have been raising my kids while my husband who is an officer in the Army for the last ten years work. Two weeks ago, I applied to a couple of vacants at at hospital near my house..some shifts are 12 hours other is 8 hours, rotative, weekends etc. They called me and I have an interview tomorrow at 1pm but don't exactly know which of the three positions. What is bothering me is that my usband was told yesterday he could be deployed anytime to Afganistan and I was not counting on that. Now, I have this interview and I know I will have to leave my children alone to comply with my schedules. I should have waited longer and focus on a day shift at a nursing home since they are 8 hours, or at the same hospital I applied but only as a part-time with 8 hours during the day so my family doesn't pay the consecuences.

I guess my questions are: Should I go ahead with the intervire process for this night shift, etc jobs, should I decline the interview (it is a 1pm), and how (personally, calling, what to say). It is important for me to not burn bridges there since I would like to be a nurse there one day.

Thank you so much for any input!