Things to watch for when assessing potential risk (think PLAID PALS):

Plan -- Do they have one?

Lethality -- Is it lethal? Can they die?

Availability -- Do they have the means to carry it out?

Illness -- Do they have a mental or physical illness?

Depression -- Chronic or specific incident(s)?

Previous attempts -- How many? How recent?

Alone -- Are they alone? Do they have a support system? Partner? Are they alone right now?

Loss -- Have they suffered a loss? Death, job, relationship, self esteem?

Substance Abuse (or use) -- Drugs, alcohol, medicine? Current, chronic?