What sort of knee injury & what would we bring for it? This was mentioned, but no further info. Discriminating survivors want to know. . . .

About knives & tools: one should have backups to critical gear. People lose stuff all the time. I once found a telescope in a leather case while on a walk in the woods. The belt loop broke. While a telescope is not absolutely essential, the loss of other gear could cut ones chances considerably if there is no backup.
I have a USMC "kabar" made by Camillus that has gone all over the world attached to my web gear. I have been able to put a shaving sharp edge on it & it seems to hold an edge rather well. I don't have a large number of knives because I don't have a large amount of money. It is my opinion that the steel in the Camillus "kabar" is better than that in the Buck, Gerber & real Kabar knives that I have owned. BTW, when making critical comments, please bear in mind that the individuals' choice of gear may be influenced by his wallet.