Step-by-step explanation:
At first the quote 'the gym falls completely silent' suggests that there is a tense situation but as it goes on to 'The entire tribe turns its back on Junior' suggests that they may be angry with Junior for some particular reason which then leaves the reader wanting to read on in the story to find out why the tribe has turned their back on Junior. But '- all except for Rowdy' which allows the writer to suggest that maybe he is still on Juniors side but then 'who simply looks like he wants to kill him' is giving us a weird vibe that they don't want Junior to be there