My opinions only, no facts here:
This is my updated time-line for the morning that Holly Bobo disappeared, including more recent newspaper reports. IT IS NOT OFFICIAL! Before reading this, note that Hollys brother apparently did not know that Hollys boyfriend was across the county hunting turkey that morning. I have tried to avoid interpretation, except where exact times or event sequences must be deduced from the newspaper reports. Some of the events may be simultaneous. In this updated time-line, I have included a few personal comments, clearly distinguished.
4:30 AM (Holly awoke and was in bedroom studying, witnesses unknown)
5:30-5:35 (Holly still in bedroom, witness is father)
5:30-5:35 (Hollys father leaves for work, witness is himself)
6:30-7:00 (Holly in bedroom and at breakfast table and mother makes a lunch for Holly, witness is mother)
7:00-ish (Hollys mother leaves for work, witness is herself)
7:00-ish (Holly talking on phone with college girlfriend, witness is girlfriend)
7:30-ish (Holly talked with boyfriend on phone about him being accused of trespassing on her grandmothers property across the county that morning while turkey hunting, witness is boyfriend)
7:30-ish (a flurry of calls between Holly/Hollys boyfriend and Hollys mother about the mistaken trespassing incident, witnesses are boyfriend and mother)
7:30-7:35 (Holly talked with mother on phone, witness is mother)
7:40-ish (Holly going outside to car-possibly 5 minutes earlier than usual so as to not miss a college exam, no witnesses)
7:40 (someone screamed at Hollys house, male witness to scream is nearest neighbor to Hollys house)
7:40-ish (male neighbor tells his own mother who also lives with him about hearing the scream)
7:40-ish (male neighbors mother calls Hollys mother at work about the scream, witness is secretary who relays info to mother)
****note that earlier newspaper accounts may indicate a 7:30 time for the scream AND that the neighbors called 911 at this same time, curiously the 7:30 time for a 911 call was supposedly mentioned by an official; it seems that this is now corrected to 7:40- but did someone call 911 before Hollys mother?****
7:50 (Hollys brother wakes up because their 'house dog' is barking, witness is himself; note that I have previously suggested that he may have awakened as early as 7:40 to 7:45 because this allows enough time for all of the following incidents to occur)
7:50-ish (looking out the window Hollys brother notices Hollys car is still there and sees the silhouettes of two people kneeled down by the car, he also hears voices of two people, witness is himself)
7:50ish- (Hollys brother calls his mother but gets no answer because mothers phone is not with her, witnesses are himself and secretary)
7:50-ish (mother gets message from secretary and calls son/Hollys brother who tells his mother about Hollys car still being there and the two people he saw, witnesses are son and mother)
7:50-ish (the alarmed mother calls 911 but is not satisfied that she talked to the right office, witness is Henderson County dispatch)
7:50-ish (Holly is seen being led into woods by a man, witness is brother)
7:50-ish (mother calls son again and son says Holly is walking into woods with a man he thinks is her boyfriend-mother says it cannot be her boyfriend and to call 911 and go outside with a gun and follow them, witnesses are son and mother)
7:50-ish (mother calls 911 again, witness is Decatur County dispatch)
7:50-ish (brother tries to call Holly but gets voicemail, witness is himself)
7:50-ish (brother tries to call Hollys boyfriend but gets voicemail, witness is himself)
7:50-ish (brother gets a pistol and walks out of house and notices blood and a spilled can of soda by Hollys car, witness is himself)
8:00 (neighbor woman pulls up to Hollys house and reports the scream her son heard to Hollys brother, neighbor woman and Hollys brother are witnesses for each other)
8:00-ish: (brother calls 911 as he hears sirens, witness is presumably the dispatcher- note that this call may have been at 7:59 based on a supposed official comment)
8:00-ish (first police car arrives just after 8 oclock)
8:00-ish (the immediate woods where Holly was last seen were searched by up to three officers; this is both indicated and contradicted by these two statements: Decatur County Sheriff Roy Wyatt said as soon as deputies arrived, they took a statement from Clint and began searching where Holly was last seen AND Wyatt said deputies did not want to enter the area or allow others to do so for fear that they would impair some evidence that might be found and because they were waiting on a search dog and trying to gather information leading them to go a certain direction.)
later than 8:15: (the State Patrol brought in a search dog or dogs; it is implied that this was the same day that Holly disappeared)
Remember that much of this is based upon various news accounts and that can explain seeming discrepancies. What is interesting is that there are some accounts that the first 911 call could have come from the neighbor, prior to the first call to 911 from Hollys mother. However, I suggest that this reflects garbled early news accounts. IF the State Patrol dogs were used and IF they were used the same day Holly disappeared, I believe they could track her. I will repeat myself from earlier posts- what the dogs saw is key to understanding this case. One other point of interest- if I called someone on every occasion that I heard a shriek or scream, the phone lines would be tied up half of the time. I think that this was a particularly blood-curdling and loud scream that the neighbors KNEW immediately was important.