Possible Clues:

• Bible class on the heavens, admitting possibility of unpleasant outcome
• Like penny stocks
• Dangerous state in East -- heavens above
• Precarious run: one shown on satellite TV
• Potentially disastrous
• Dangerous, unsafe
• Fit for a daredevil
• Like daredevilry
• Not safe to do
• Teacher retiring to Kerry is insecure