I’m traveling/teaching/sick/without internet access/waiting on a collaborator/waiting on a letter of support/in a different time zone/under a lot of stress: can I have an extension to apply?

No. Deadlines for Limited Submission internal competitions are treated the same as funding deadlines for Federal agency sponsors, Foundations or other external funding sources. These opportunities are advertised widely and well in advance of the application deadlines. To maintain fairness for all, the deadline is firm and consistent for all applicants without exception.