Not sure what TMS means in this context, but in the process of trying to figure it out I learned that this is a relatively advanced fighter bomber and four of them have been destroyed assaulting this position over the last month.

At $36 million a pop, the four lost represent a total loss of $144 million. Best guess is that they started this conflict with 125 of these. So while it stings to lose them and may be irreplaceable, they nonetheless have many more.