Boston (CNN)She knew something awful had happened. It was smoky and all she could hear were muffled screams. Her foot was turned sideways and her legs wouldn't work right. And her good friend, Krystle Campbell, was just lying there on the ground. 

Karen Rand -- she's Karen McWatters now -- dragged herself across the pavement. She wanted to get closer to Krystle so they could talk and take comfort from each other in the midst of so much chaos. 

"I got close to her, " she recalled. "For some reason, I got close to her head and we put our faces together." 

Krystle said that her legs hurt. They were the last words she'd speak. The two women held hands until Krystle's went limp. 

McWatters was the fifth witness of the first day of the terror trial of accused Boston Marathon bomber Dzhokhar Tsarnaev, who is accused of detonating pressure cooker bombs with his brother to punish the United States for policies they believe inflict suffering on Muslims. 

Three people were killed in the blasts: Campbell, a 29-year-old manager for a restaurant chain; Martin Richard, an 8-year-old boy; and Lingzi Lu, a 23-year-old grad student. 

More than 250 others were injured. And the first day of the trial -- after opening statements -- revolved around a number of survivors of the attack, who recounted in detail the chaos of that day. Prosecutors called them to the stand to paint a picture of the havoc and pain the bombings inflicted. Tsarnaev's attorneys chose not to cross-examine any of the survivors.  QUESTIONS:

Q1:
1. What happened to Karen McWatters?
2. What incident did Karen McWatters go through?
3. 
Q2:
1. What is the name of the person that was with Karen McWatters?
2. Karen McWatters was with which person?
3. 
Q3:
1. Did Krystle Campbell survive the Boston Marathon bombings?
2. Was Krystle Campbell a survivor in the Boston Marathon bombings?
3. 
Q4:
1. Was Karen McWatters a witness in the terror trial?
2. Did Karen McWatters act as a witness during the terror trial?
3. 
Q5:
1. What is the name of the person that is at the center of the terror trial?
2. The terror trial is directed against which person?
3. 
Q6:
1. What is Dzhokhar Tsarnaev accused of?
2. Dzhokhar Tsarnaev is accused of doing what?
3. 
Q7:
1. Dzhokhar Tsarnaev allegedly detonated the bombs to do what?
2. The bombs were allegedly detonated by Dzhokhar Tsarnaev to do what?
3. 
Q8:
1. Was anyone hurt in the Boston Marathon bombings?
2. Did the Boston Marathon bombings result in anyone being wounded?
3. 
Q9:
1. How many people were wounded as a result of the Boston Marathon bombings?
2. The Boston Marathon bombings resulted in how many people being injured?
3. 
Q10:
1. Was anyone killed as a result of the Boston Marathon bombings other than Krystle Campbell?
2. Did the Boston Marathon bombings result in any casualties other than Krystle Campbell?
3. 
Q11:
1. How many people dies as a result of the Boston Marathon bombings other than Krystle Campbell?
2. Krystle Campbell and how many other people died as a result of the Boston Marathon bombings?
3. 
Q12:
1. Did any of the survivors other than Karen McWatters testify?
2. Was a testimony made by any of the survivors other than Karen McWatters?
3. 
Q13:
1. Were any of the survivors of the Boston Marathon bombings cross-examined?
2. Was there a cross-examination of the Boston Marathon survivors?
3. 
Q14:
1. Did Karen Rand get married?
2. Did Karen Rand get married after the Boston Marathon bombings?
3. 
Q15:
1. What is the total number of people that testified at the trial prior to Karen McWatters?
2. Prior to Karen McWatters, how many people testified?
3. 
