Suicidal bf

Hi everyone. My boyfriend is currently doing his training and has just finished week 6. He told me a few weeks ago he’s been having thoughts of suicide, as someone who’s personally experienced that I’ve tried my best to listen and be supportive. I’ve been asking how he’s doing just to check in, and everything seemed better until today. He had told me he wasn’t doing well and would be going to the hospital on base tonight because this morning he was “looking for things to use”, I asked if anything happened to make him feel that way and he said no, and he thought he was doing better so he’s worried.

I know for me if I ever did anything it would be impulsive, and I’m worried it may be the same for him.

Because we are so far away I’m not really sure what else I can be doing here, if anybody has any advice it would be greatly appreciated.

Also important, but we’re currently not “together”, best to say it’s complicated to say the least, so I’m just really not sure what I can or should be doing.

Thanks in advance

Edit: I haven’t heard from him since 4pm yesterday, will they hold him for a certain amount of time as they do for regular mental health related issues? I’m not sure how things work there so if anyone has any info I’d really appreciate it